39400064 has 32 divisors (see below), whose sum is σ = 85631040. Its totient is φ = 17908480.

The previous prime is 39400063. The next prime is 39400069. The reversal of 39400064 is 46000493.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (39400063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12584 + ... + 15399.

It is an arithmetic number, because the mean of its divisors is an integer number (2675970).

Almost surely, 2^39400064 is an apocalyptic number.

It is an amenable number.

39400064 is an abundant number, since it is smaller than the sum of its proper divisors (46230976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39400064 is a wasteful number, since it uses less digits than its factorization.

39400064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28008 (or 27996 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 39400064 is about 6276.9470286119. The cubic root of 39400064 is about 340.2767757839.

The spelling of 39400064 in words is "thirty-nine million, four hundred thousand, sixty-four".