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7401089 = 19389531
BaseRepresentation
bin11100001110111010000001
3111221000101102
4130032322001
53343313324
6422344145
7116623343
oct34167201
914830342
107401089
1141a5603
12258b055
1316c1957
14da9293
159b2dae
hex70ee81

7401089 has 4 divisors (see below), whose sum is σ = 7790640. Its totient is φ = 7011540.

The previous prime is 7401077. The next prime is 7401091. The reversal of 7401089 is 9801047.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7401089 - 216 = 7335553 is a prime.

It is a super-2 number, since 2×74010892 = 109552236771842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7401049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194747 + ... + 194784.

It is an arithmetic number, because the mean of its divisors is an integer number (1947660).

Almost surely, 27401089 is an apocalyptic number.

It is an amenable number.

7401089 is a deficient number, since it is larger than the sum of its proper divisors (389551).

7401089 is a wasteful number, since it uses less digits than its factorization.

7401089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389550.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 7401089 is about 2720.4942565644. The cubic root of 7401089 is about 194.8790747084.

The spelling of 7401089 in words is "seven million, four hundred one thousand, eighty-nine".

Divisors: 1 19 389531 7401089