970172887 has 2 divisors, whose sum is σ = 970172888. Its totient is φ = 970172886.

The previous prime is 970172857. The next prime is 970172899. The reversal of 970172887 is 788271079.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 970172887 - 2²³ = 961784279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 970172887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (970172857) 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 as a sum of consecutive naturals, namely, 485086443 + 485086444.

It is an arithmetic number, because the mean of its divisors is an integer number (485086444).

Almost surely, 2^970172887 is an apocalyptic number.

970172887 is a deficient number, since it is larger than the sum of its proper divisors (1).

970172887 is an equidigital number, since it uses as much as digits as its factorization.

970172887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 395136, while the sum is 49.

The square root of 970172887 is about 31147.5984146451. The cubic root of 970172887 is about 989.9571069401.

The spelling of 970172887 in words is "nine hundred seventy million, one hundred seventy-two thousand, eight hundred eighty-seven".