39791672 has 8 divisors (see below), whose sum is σ = 74609400. Its totient is φ = 19895832.

The previous prime is 39791663. The next prime is 39791699. The reversal of 39791672 is 27619793.

It is a happy number.

39791672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 2486972 + ... + 2486987.

It is an arithmetic number, because the mean of its divisors is an integer number (9326175).

Almost surely, 2^39791672 is an apocalyptic number.

It is an amenable number.

39791672 is a deficient number, since it is larger than the sum of its proper divisors (34817728).

39791672 is a wasteful number, since it uses less digits than its factorization.

39791672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4973965 (or 4973961 counting only the distinct ones).

The product of its digits is 142884, while the sum is 44.

The square root of 39791672 is about 6308.0640453312. The cubic root of 39791672 is about 341.4004291455.

The spelling of 39791672 in words is "thirty-nine million, seven hundred ninety-one thousand, six hundred seventy-two".