97991292 has 24 divisors (see below), whose sum is σ = 261310336. Its totient is φ = 27997488.

The previous prime is 97991291. The next prime is 97991317. The reversal of 97991292 is 29219979.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97991291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583198 + ... + 583365.

Almost surely, 2^97991292 is an apocalyptic number.

It is an amenable number.

97991292 is an abundant number, since it is smaller than the sum of its proper divisors (163319044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97991292 is a wasteful number, since it uses less digits than its factorization.

97991292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166577 (or 1166575 counting only the distinct ones).

The product of its digits is 183708, while the sum is 48.

The square root of 97991292 is about 9899.0551064230. The cubic root of 97991292 is about 461.0299731281.

The spelling of 97991292 in words is "ninety-seven million, nine hundred ninety-one thousand, two hundred ninety-two".