39471904632889 has 9 divisors (see below), whose sum is σ = 39523407879151. Its totient is φ = 39420468438160.

The previous prime is 39471904632827. The next prime is 39471904632971. The reversal of 39471904632889 is 98823640917493.

The square root of 39471904632889 is 6282667.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 36579211205625 + 2892693427264 = 6048075^2 + 1700792^2 .

It is not a de Polignac number, because 39471904632889 - 2⁷ = 39471904632761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39471904632389) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5384241954 + ... + 5384249284.

Almost surely, 2^{39471904632889} is an apocalyptic number.

39471904632889 is the 6282667-th square number.

39471904632889 is the 3141334-th centered octagonal number.

It is an amenable number.

39471904632889 is a deficient number, since it is larger than the sum of its proper divisors (51503246262).

39471904632889 is an frugal number, since it uses more digits than its factorization.

39471904632889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16376 (or 8188 counting only the distinct ones).

The product of its (nonzero) digits is 564350976, while the sum is 73.

The spelling of 39471904632889 in words is "thirty-nine trillion, four hundred seventy-one billion, nine hundred four million, six hundred thirty-two thousand, eight hundred eighty-nine".