97926491 has 16 divisors (see below), whose sum is σ = 108591840. Its totient is φ = 87732480.

The previous prime is 97926487. The next prime is 97926497. The reversal of 97926491 is 19462979.

It is a cyclic number.

It is not a de Polignac number, because 97926491 - 2² = 97926487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97926497) 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 15 ways as a sum of consecutive naturals, for example, 143036 + ... + 143718.

It is an arithmetic number, because the mean of its divisors is an integer number (6786990).

Almost surely, 2^97926491 is an apocalyptic number.

97926491 is a deficient number, since it is larger than the sum of its proper divisors (10665349).

97926491 is a wasteful number, since it uses less digits than its factorization.

97926491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006.

The product of its digits is 244944, while the sum is 47.

The square root of 97926491 is about 9895.7814749518. The cubic root of 97926491 is about 460.9283253507.

The spelling of 97926491 in words is "ninety-seven million, nine hundred twenty-six thousand, four hundred ninety-one".