99396231091 has 8 divisors (see below), whose sum is σ = 105652578960. Its totient is φ = 93185384448.

The previous prime is 99396231083. The next prime is 99396231101. The reversal of 99396231091 is 19013269399.

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 99396231091 - 2³ = 99396231083 is a prime.

It is a super-2 number, since 2×99396231091² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99396231691) 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, 11370801 + ... + 11379538.

It is an arithmetic number, because the mean of its divisors is an integer number (13206572370).

Almost surely, 2^99396231091 is an apocalyptic number.

99396231091 is a deficient number, since it is larger than the sum of its proper divisors (6256347869).

99396231091 is a wasteful number, since it uses less digits than its factorization.

99396231091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22750613.

The product of its (nonzero) digits is 708588, while the sum is 52.

The spelling of 99396231091 in words is "ninety-nine billion, three hundred ninety-six million, two hundred thirty-one thousand, ninety-one".