472769987 has 2 divisors, whose sum is σ = 472769988. Its totient is φ = 472769986.

The previous prime is 472769981. The next prime is 472770007. The reversal of 472769987 is 789967274.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 472769987 - 2²² = 468575683 is a prime.

It is a super-2 number, since 2×472769987² = 447022921215960338, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (472769981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236384993 + 236384994.

It is an arithmetic number, because the mean of its divisors is an integer number (236384994).

Almost surely, 2^472769987 is an apocalyptic number.

472769987 is a deficient number, since it is larger than the sum of its proper divisors (1).

472769987 is an equidigital number, since it uses as much as digits as its factorization.

472769987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10668672, while the sum is 59.

The square root of 472769987 is about 21743.2745234015. The cubic root of 472769987 is about 779.0224368621.

The spelling of 472769987 in words is "four hundred seventy-two million, seven hundred sixty-nine thousand, nine hundred eighty-seven".