97593991 has 16 divisors (see below), whose sum is σ = 117635328. Its totient is φ = 79868800.

The previous prime is 97593989. The next prime is 97594001. The reversal of 97593991 is 19939579.

It is not a de Polignac number, because 97593991 - 2¹ = 97593989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97593911) 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 15 ways as a sum of consecutive naturals, for example, 7045 + ... + 15646.

It is an arithmetic number, because the mean of its divisors is an integer number (7352208).

Almost surely, 2^97593991 is an apocalyptic number.

97593991 is a deficient number, since it is larger than the sum of its proper divisors (20041337).

97593991 is a wasteful number, since it uses less digits than its factorization.

97593991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22742.

The product of its digits is 688905, while the sum is 52.

The square root of 97593991 is about 9878.9671018786. The cubic root of 97593991 is about 460.4060545027.

The spelling of 97593991 in words is "ninety-seven million, five hundred ninety-three thousand, nine hundred ninety-one".