97291191 has 8 divisors (see below), whose sum is σ = 136549120. Its totient is φ = 61447032.

The previous prime is 97291171. The next prime is 97291193. The reversal of 97291191 is 19119279.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-97291191 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 (97291193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 853375 + ... + 853488.

It is an arithmetic number, because the mean of its divisors is an integer number (17068640).

Almost surely, 2^97291191 is an apocalyptic number.

97291191 is a deficient number, since it is larger than the sum of its proper divisors (39257929).

97291191 is a wasteful number, since it uses less digits than its factorization.

97291191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1706885.

The product of its digits is 10206, while the sum is 39.

The square root of 97291191 is about 9863.6297071616. The cubic root of 97291191 is about 459.9294015788.

The spelling of 97291191 in words is "ninety-seven million, two hundred ninety-one thousand, one hundred ninety-one".