97393891 has 8 divisors (see below), whose sum is σ = 116146944. Its totient is φ = 79850760.

The previous prime is 97393883. The next prime is 97393903. The reversal of 97393891 is 19839379.

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

It is a cyclic number.

It is not a de Polignac number, because 97393891 - 2³ = 97393883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97393811) 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, 302305 + ... + 302626.

It is an arithmetic number, because the mean of its divisors is an integer number (14518368).

Almost surely, 2^97393891 is an apocalyptic number.

97393891 is a deficient number, since it is larger than the sum of its proper divisors (18753053).

97393891 is a wasteful number, since it uses less digits than its factorization.

97393891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604961.

The product of its digits is 367416, while the sum is 49.

The square root of 97393891 is about 9868.8343283288. The cubic root of 97393891 is about 460.0911775785.

It can be divided in two parts, 973 and 93891, that added together give a square (94864 = 308²).

The spelling of 97393891 in words is "ninety-seven million, three hundred ninety-three thousand, eight hundred ninety-one".