97873791 has 8 divisors (see below), whose sum is σ = 130811520. Its totient is φ = 65092632.

The previous prime is 97873771. The next prime is 97873813. The reversal of 97873791 is 19737879.

It is a happy number.

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

It is not a de Polignac number, because 97873791 - 2¹⁷ = 97742719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97873771) 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, 37675 + ... + 40188.

It is an arithmetic number, because the mean of its divisors is an integer number (16351440).

Almost surely, 2^97873791 is an apocalyptic number.

97873791 is a deficient number, since it is larger than the sum of its proper divisors (32937729).

97873791 is a wasteful number, since it uses less digits than its factorization.

97873791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78285.

The product of its digits is 666792, while the sum is 51.

The square root of 97873791 is about 9893.1183658137. The cubic root of 97873791 is about 460.8456263069.

The spelling of 97873791 in words is "ninety-seven million, eight hundred seventy-three thousand, seven hundred ninety-one".