64426239 has 16 divisors (see below), whose sum is σ = 96038400. Its totient is φ = 42684408.

The previous prime is 64426231. The next prime is 64426249. The reversal of 64426239 is 93262446.

64426239 is a `hidden beast` number, since 644 + 2 + 6 + 2 + 3 + 9 = 666.

It is not a de Polignac number, because 64426239 - 2³ = 64426231 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64426231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2919 + ... + 11720.

It is an arithmetic number, because the mean of its divisors is an integer number (6002400).

Almost surely, 2^64426239 is an apocalyptic number.

64426239 is a deficient number, since it is larger than the sum of its proper divisors (31612161).

64426239 is a wasteful number, since it uses less digits than its factorization.

64426239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14811 (or 14805 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 64426239 is about 8026.5957291993. The cubic root of 64426239 is about 400.8860338277.

The spelling of 64426239 in words is "sixty-four million, four hundred twenty-six thousand, two hundred thirty-nine".