99465387931 has 16 divisors (see below), whose sum is σ = 126367940608. Its totient is φ = 76159245600.

The previous prime is 99465387929. The next prime is 99465387977. The reversal of 99465387931 is 13978356499.

It is a cyclic number.

It is not a de Polignac number, because 99465387931 - 2¹ = 99465387929 is a prime.

It is a super-2 number, since 2×99465387931² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99465387331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17626635 + ... + 17632276.

It is an arithmetic number, because the mean of its divisors is an integer number (7897996288).

Almost surely, 2^99465387931 is an apocalyptic number.

99465387931 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

99465387931 is the 182086-th hex number.

99465387931 is a deficient number, since it is larger than the sum of its proper divisors (26902552677).

99465387931 is a wasteful number, since it uses less digits than its factorization.

99465387931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35258962.

The product of its digits is 44089920, while the sum is 64.

The spelling of 99465387931 in words is "ninety-nine billion, four hundred sixty-five million, three hundred eighty-seven thousand, nine hundred thirty-one".