39956572 has 12 divisors (see below), whose sum is σ = 70458696. Its totient is φ = 19825520.

The previous prime is 39956557. The next prime is 39956573. The reversal of 39956572 is 27565993.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39956573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37603 + ... + 38650.

It is an arithmetic number, because the mean of its divisors is an integer number (5871558).

Almost surely, 2^39956572 is an apocalyptic number.

It is an amenable number.

39956572 is a deficient number, since it is larger than the sum of its proper divisors (30502124).

39956572 is a wasteful number, since it uses less digits than its factorization.

39956572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76388 (or 76386 counting only the distinct ones).

The product of its digits is 510300, while the sum is 46.

The square root of 39956572 is about 6321.1211030956. The cubic root of 39956572 is about 341.8713764576.

The spelling of 39956572 in words is "thirty-nine million, nine hundred fifty-six thousand, five hundred seventy-two".