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8906069 = 13816449
BaseRepresentation
bin100001111110…
…010101010101
3121202110211102
4201332111111
54234443234
6514515445
7135462134
oct41762525
917673742
108906069
115033297
122b95b85
131aca983
14127b91b
15badc7e
hex87e555

8906069 has 4 divisors (see below), whose sum is σ = 8913900. Its totient is φ = 8898240.

The previous prime is 8906033. The next prime is 8906071. The reversal of 8906069 is 9606098.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9606098 = 24803049.

It can be written as a sum of positive squares in 2 ways, for example, as 6838225 + 2067844 = 2615^2 + 1438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-8906069 is a prime.

It is a super-2 number, since 2×89060692 = 158636130065522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8906089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1844 + ... + 4605.

It is an arithmetic number, because the mean of its divisors is an integer number (2228475).

Almost surely, 28906069 is an apocalyptic number.

It is an amenable number.

8906069 is a deficient number, since it is larger than the sum of its proper divisors (7831).

8906069 is a wasteful number, since it uses less digits than its factorization.

8906069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7830.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 8906069 is about 2984.3037714013. The cubic root of 8906069 is about 207.2822043418.

The spelling of 8906069 in words is "eight million, nine hundred six thousand, sixty-nine".

Divisors: 1 1381 6449 8906069