172290967 has 2 divisors, whose sum is σ = 172290968. Its totient is φ = 172290966.

The previous prime is 172290947. The next prime is 172290973. The reversal of 172290967 is 769092271.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172290967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (172290947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86145483 + 86145484.

It is an arithmetic number, because the mean of its divisors is an integer number (86145484).

Almost surely, 2^172290967 is an apocalyptic number.

172290967 is a deficient number, since it is larger than the sum of its proper divisors (1).

172290967 is an equidigital number, since it uses as much as digits as its factorization.

172290967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 172290967 is about 13125.9653740211. The cubic root of 172290967 is about 556.4431957459.

The spelling of 172290967 in words is "one hundred seventy-two million, two hundred ninety thousand, nine hundred sixty-seven".