99931249 has 8 divisors (see below), whose sum is σ = 109494720. Its totient is φ = 90447600.

The previous prime is 99931231. The next prime is 99931261. The reversal of 99931249 is 94213999.

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 99931249 - 2⁹ = 99930737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99931199 and 99931208.

It is not an unprimeable number, because it can be changed into a prime (99935249) 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, 17317 + ... + 22354.

It is an arithmetic number, because the mean of its divisors is an integer number (13686840).

Almost surely, 2^99931249 is an apocalyptic number.

It is an amenable number.

99931249 is a deficient number, since it is larger than the sum of its proper divisors (9563471).

99931249 is a wasteful number, since it uses less digits than its factorization.

99931249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39911.

The product of its digits is 157464, while the sum is 46.

The square root of 99931249 is about 9996.5618589593. The cubic root of 99931249 is about 464.0524876836.

The spelling of 99931249 in words is "ninety-nine million, nine hundred thirty-one thousand, two hundred forty-nine".