97976491 has 12 divisors (see below), whose sum is σ = 104485608. Its totient is φ = 91853312.

The previous prime is 97976453. The next prime is 97976497. The reversal of 97976491 is 19467979.

It is a de Polignac number, because none of the positive numbers 2^k-97976491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97976497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99795 + ... + 100771.

It is an arithmetic number, because the mean of its divisors is an integer number (8707134).

Almost surely, 2^97976491 is an apocalyptic number.

97976491 is a deficient number, since it is larger than the sum of its proper divisors (6509117).

97976491 is a wasteful number, since it uses less digits than its factorization.

97976491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358 (or 1341 counting only the distinct ones).

The product of its digits is 857304, while the sum is 52.

The square root of 97976491 is about 9898.3074815849. The cubic root of 97976491 is about 461.0067600171.

The spelling of 97976491 in words is "ninety-seven million, nine hundred seventy-six thousand, four hundred ninety-one".