9172942799 has 2 divisors, whose sum is σ = 9172942800. Its totient is φ = 9172942798.

The previous prime is 9172942787. The next prime is 9172942847. The reversal of 9172942799 is 9972492719.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9172942799 - 2⁸ = 9172942543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9172942729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4586471399 + 4586471400.

It is an arithmetic number, because the mean of its divisors is an integer number (4586471400).

Almost surely, 2^9172942799 is an apocalyptic number.

9172942799 is a deficient number, since it is larger than the sum of its proper divisors (1).

9172942799 is an equidigital number, since it uses as much as digits as its factorization.

9172942799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5143824, while the sum is 59.

The square root of 9172942799 is about 95775.4811995220. The cubic root of 9172942799 is about 2093.3229192153.

The spelling of 9172942799 in words is "nine billion, one hundred seventy-two million, nine hundred forty-two thousand, seven hundred ninety-nine".