64039401 has 12 divisors (see below), whose sum is σ = 92720628. Its totient is φ = 42591744.

The previous prime is 64039399. The next prime is 64039403. The reversal of 64039401 is 10493046.

It is an interprime number because it is at equal distance from previous prime (64039399) and next prime (64039403).

It can be written as a sum of positive squares in 2 ways, for example, as 39388176 + 24651225 = 6276^2 + 4965^2 .

It is not a de Polignac number, because 64039401 - 2¹ = 64039399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64039403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4320 + ... + 12113.

It is an arithmetic number, because the mean of its divisors is an integer number (7726719).

Almost surely, 2^64039401 is an apocalyptic number.

It is an amenable number.

64039401 is a deficient number, since it is larger than the sum of its proper divisors (28681227).

64039401 is a wasteful number, since it uses less digits than its factorization.

64039401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16872 (or 16869 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 64039401 is about 8002.4621836032. The cubic root of 64039401 is about 400.0820685774.

The spelling of 64039401 in words is "sixty-four million, thirty-nine thousand, four hundred one".