472904639 has 2 divisors, whose sum is σ = 472904640. Its totient is φ = 472904638.

The previous prime is 472904617. The next prime is 472904651. The reversal of 472904639 is 936409274.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 472904639 - 2²⁴ = 456127423 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 472904639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472904609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236452319 + 236452320.

It is an arithmetic number, because the mean of its divisors is an integer number (236452320).

Almost surely, 2^472904639 is an apocalyptic number.

472904639 is a deficient number, since it is larger than the sum of its proper divisors (1).

472904639 is an equidigital number, since it uses as much as digits as its factorization.

472904639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 472904639 is about 21746.3707086953. The cubic root of 472904639 is about 779.0963889423.

The spelling of 472904639 in words is "four hundred seventy-two million, nine hundred four thousand, six hundred thirty-nine".