472038991 has 2 divisors, whose sum is σ = 472038992. Its totient is φ = 472038990.

The previous prime is 472038979. The next prime is 472039031. The reversal of 472038991 is 199830274.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 472038991 - 2²⁵ = 438484559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472038491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236019495 + 236019496.

It is an arithmetic number, because the mean of its divisors is an integer number (236019496).

Almost surely, 2^472038991 is an apocalyptic number.

472038991 is a deficient number, since it is larger than the sum of its proper divisors (1).

472038991 is an equidigital number, since it uses as much as digits as its factorization.

472038991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 472038991 is about 21726.4583169922. The cubic root of 472038991 is about 778.6207221074.

The spelling of 472038991 in words is "four hundred seventy-two million, thirty-eight thousand, nine hundred ninety-one".