64229139 has 32 divisors (see below), whose sum is σ = 107878400. Its totient is φ = 37441440.

The previous prime is 64229093. The next prime is 64229149. The reversal of 64229139 is 93192246.

64229139 is a `hidden beast` number, since 642 + 2 + 9 + 1 + 3 + 9 = 666.

64229139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64229139 - 2¹⁵ = 64196371 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 Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64229149) 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 31 ways as a sum of consecutive naturals, for example, 1854 + ... + 11484.

It is an arithmetic number, because the mean of its divisors is an integer number (3371200).

Almost surely, 2^64229139 is an apocalyptic number.

64229139 is a deficient number, since it is larger than the sum of its proper divisors (43649261).

64229139 is a wasteful number, since it uses less digits than its factorization.

64229139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9672 (or 9666 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 64229139 is about 8014.3083918701. The cubic root of 64229139 is about 400.4768043349.

The spelling of 64229139 in words is "sixty-four million, two hundred twenty-nine thousand, one hundred thirty-nine".