39071972 has 12 divisors (see below), whose sum is σ = 68835900. Its totient is φ = 19404576.

The previous prime is 39071969. The next prime is 39071987. The reversal of 39071972 is 27917093.

It can be written as a sum of positive squares in 2 ways, for example, as 15413476 + 23658496 = 3926^2 + 4864^2 .

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, 32183 + ... + 33374.

It is an arithmetic number, because the mean of its divisors is an integer number (5736325).

Almost surely, 2^39071972 is an apocalyptic number.

It is an amenable number.

39071972 is a deficient number, since it is larger than the sum of its proper divisors (29763928).

39071972 is a wasteful number, since it uses less digits than its factorization.

39071972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65710 (or 65708 counting only the distinct ones).

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 39071972 is about 6250.7577140696. The cubic root of 39071972 is about 339.3296248859.

The spelling of 39071972 in words is "thirty-nine million, seventy-one thousand, nine hundred seventy-two".