39140644 has 12 divisors (see below), whose sum is σ = 68544000. Its totient is φ = 19556648.

The previous prime is 39140639. The next prime is 39140653. The reversal of 39140644 is 44604193.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5757 + ... + 10555.

It is an arithmetic number, because the mean of its divisors is an integer number (5712000).

Almost surely, 2^39140644 is an apocalyptic number.

It is an amenable number.

39140644 is a deficient number, since it is larger than the sum of its proper divisors (29403356).

39140644 is a wasteful number, since it uses less digits than its factorization.

39140644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6842 (or 6840 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 39140644 is about 6256.2483966032. The cubic root of 39140644 is about 339.5283078477.

The spelling of 39140644 in words is "thirty-nine million, one hundred forty thousand, six hundred forty-four".