39687952 has 10 divisors (see below), whose sum is σ = 76895438. Its totient is φ = 19843968.

The previous prime is 39687929. The next prime is 39687953. The reversal of 39687952 is 25978693.

It can be written as a sum of positive squares in only one way, i.e., 29550096 + 10137856 = 5436^2 + 3184^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39687896 and 39687905.

It is not an unprimeable number, because it can be changed into a prime (39687953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1240233 + ... + 1240264.

Almost surely, 2^39687952 is an apocalyptic number.

It is an amenable number.

39687952 is a deficient number, since it is larger than the sum of its proper divisors (37207486).

39687952 is a wasteful number, since it uses less digits than its factorization.

39687952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480505 (or 2480499 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 39687952 is about 6299.8374582206. The cubic root of 39687952 is about 341.1035423709.

The spelling of 39687952 in words is "thirty-nine million, six hundred eighty-seven thousand, nine hundred fifty-two".