99056140391 has 32 divisors (see below), whose sum is σ = 111077400000. Its totient is φ = 87706644480.

The previous prime is 99056140367. The next prime is 99056140409. The reversal of 99056140391 is 19304165099.

It is a happy number.

It is not a de Polignac number, because 99056140391 - 2²⁶ = 98989031527 is a prime.

It is a super-3 number, since 3×99056140391³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99056140301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79307735 + ... + 79308983.

It is an arithmetic number, because the mean of its divisors is an integer number (3471168750).

Almost surely, 2^99056140391 is an apocalyptic number.

99056140391 is a deficient number, since it is larger than the sum of its proper divisors (12021259609).

99056140391 is a wasteful number, since it uses less digits than its factorization.

99056140391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499.

The product of its (nonzero) digits is 262440, while the sum is 47.

The spelling of 99056140391 in words is "ninety-nine billion, fifty-six million, one hundred forty thousand, three hundred ninety-one".