39887572 has 12 divisors (see below), whose sum is σ = 70207956. Its totient is φ = 19828160.

The previous prime is 39887563. The next prime is 39887609. The reversal of 39887572 is 27578893.

It can be written as a sum of positive squares in 2 ways, for example, as 16112196 + 23775376 = 4014^2 + 4876^2 .

It is a congruent number.

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, 28129 + ... + 29512.

It is an arithmetic number, because the mean of its divisors is an integer number (5850663).

Almost surely, 2^39887572 is an apocalyptic number.

It is an amenable number.

39887572 is a deficient number, since it is larger than the sum of its proper divisors (30320384).

39887572 is a wasteful number, since it uses less digits than its factorization.

39887572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57818 (or 57816 counting only the distinct ones).

The product of its digits is 846720, while the sum is 49.

The square root of 39887572 is about 6315.6608521991. The cubic root of 39887572 is about 341.6744733757.

The spelling of 39887572 in words is "thirty-nine million, eight hundred eighty-seven thousand, five hundred seventy-two".