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69089389 = 471469987
BaseRepresentation
bin1000001111000…
…11100001101101
311211000002211021
410013203201231
5120141330024
610504454141
71466151535
oct407434155
9154002737
1069089389
1135aa9976
121b17a351
13114101c5
1492664c5
1560eade4
hex41e386d

69089389 has 4 divisors (see below), whose sum is σ = 70559424. Its totient is φ = 67619356.

The previous prime is 69089357. The next prime is 69089407. The reversal of 69089389 is 98398096.

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 69089389 - 25 = 69089357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69089789) 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, 734947 + ... + 735040.

It is an arithmetic number, because the mean of its divisors is an integer number (17639856).

Almost surely, 269089389 is an apocalyptic number.

It is an amenable number.

69089389 is a deficient number, since it is larger than the sum of its proper divisors (1470035).

69089389 is a wasteful number, since it uses less digits than its factorization.

69089389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470034.

The product of its (nonzero) digits is 839808, while the sum is 52.

The square root of 69089389 is about 8312.0027069293. The cubic root of 69089389 is about 410.3336348381. Note that the first 3 decimals are identical.

The spelling of 69089389 in words is "sixty-nine million, eighty-nine thousand, three hundred eighty-nine".

Divisors: 1 47 1469987 69089389