64038139 has 8 divisors (see below), whose sum is σ = 70581168. Its totient is φ = 57615360.

The previous prime is 64038127. The next prime is 64038173. The reversal of 64038139 is 93183046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64038139 - 2⁷ = 64038011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64038179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28942 + ... + 31075.

It is an arithmetic number, because the mean of its divisors is an integer number (8822646).

Almost surely, 2^64038139 is an apocalyptic number.

64038139 is a deficient number, since it is larger than the sum of its proper divisors (6543029).

64038139 is a wasteful number, since it uses less digits than its factorization.

64038139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60125.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 64038139 is about 8002.3833324829. The cubic root of 64038139 is about 400.0794404720.

The spelling of 64038139 in words is "sixty-four million, thirty-eight thousand, one hundred thirty-nine".