472886639 has 4 divisors (see below), whose sum is σ = 473333400. Its totient is φ = 472439880.

The previous prime is 472886629. The next prime is 472886641. The reversal of 472886639 is 936688274.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 472886639 - 2²⁸ = 204451183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (472886629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221789 + ... + 223910.

It is an arithmetic number, because the mean of its divisors is an integer number (118333350).

Almost surely, 2^472886639 is an apocalyptic number.

472886639 is a deficient number, since it is larger than the sum of its proper divisors (446761).

472886639 is a wasteful number, since it uses less digits than its factorization.

472886639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446760.

The product of its digits is 3483648, while the sum is 53.

The square root of 472886639 is about 21745.9568425949. The cubic root of 472886639 is about 779.0865039946.

The spelling of 472886639 in words is "four hundred seventy-two million, eight hundred eighty-six thousand, six hundred thirty-nine".