39900712 has 8 divisors (see below), whose sum is σ = 74813850. Its totient is φ = 19950352.

The previous prime is 39900701. The next prime is 39900719. The reversal of 39900712 is 21700993.

It can be written as a sum of positive squares in only one way, i.e., 29877156 + 10023556 = 5466^2 + 3166^2 .

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

It is not an unprimeable number, because it can be changed into a prime (39900719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2493787 + ... + 2493802.

Almost surely, 2^39900712 is an apocalyptic number.

It is an amenable number.

39900712 is a deficient number, since it is larger than the sum of its proper divisors (34913138).

39900712 is a wasteful number, since it uses less digits than its factorization.

39900712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4987595 (or 4987591 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 39900712 is about 6316.7010377253. The cubic root of 39900712 is about 341.7119880655.

The spelling of 39900712 in words is "thirty-nine million, nine hundred thousand, seven hundred twelve".