39791642 has 32 divisors (see below), whose sum is σ = 66960000. Its totient is φ = 17582400.

The previous prime is 39791639. The next prime is 39791659. The reversal of 39791642 is 24619793.

39791642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 39791642.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 199859 + ... + 200057.

It is an arithmetic number, because the mean of its divisors is an integer number (2092500).

Almost surely, 2^39791642 is an apocalyptic number.

39791642 is a deficient number, since it is larger than the sum of its proper divisors (27168358).

39791642 is a wasteful number, since it uses less digits than its factorization.

39791642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422.

The product of its digits is 81648, while the sum is 41.

The square root of 39791642 is about 6308.0616674221. The cubic root of 39791642 is about 341.4003433485.

The spelling of 39791642 in words is "thirty-nine million, seven hundred ninety-one thousand, six hundred forty-two".