99979494 has 16 divisors (see below), whose sum is σ = 200059200. Its totient is φ = 33309800.

The previous prime is 99979493. The next prime is 99979507. The reversal of 99979494 is 49497999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99979493) 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, 17269 + ... + 22319.

It is an arithmetic number, because the mean of its divisors is an integer number (12503700).

Almost surely, 2^99979494 is an apocalyptic number.

99979494 is an abundant number, since it is smaller than the sum of its proper divisors (100079706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99979494 is a wasteful number, since it uses less digits than its factorization.

99979494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8355.

The product of its digits is 6613488, while the sum is 60.

The square root of 99979494 is about 9998.9746474326. The cubic root of 99979494 is about 464.1271543855.

It can be divided in two parts, 9997 and 9494, that added together give a palindrome (19491).

The spelling of 99979494 in words is "ninety-nine million, nine hundred seventy-nine thousand, four hundred ninety-four".