99998931 has 8 divisors (see below), whose sum is σ = 137929680. Its totient is φ = 64367072.

The previous prime is 99998929. The next prime is 99998933. The reversal of 99998931 is 13989999.

It is an interprime number because it is at equal distance from previous prime (99998929) and next prime (99998933).

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 99998931 - 2¹ = 99998929 is a prime.

It is a super-2 number, since 2×99998931² = 19999572402285522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99998933) 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, 574620 + ... + 574793.

It is an arithmetic number, because the mean of its divisors is an integer number (17241210).

Almost surely, 2^99998931 is an apocalyptic number.

99998931 is a deficient number, since it is larger than the sum of its proper divisors (37930749).

99998931 is a wasteful number, since it uses less digits than its factorization.

99998931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149445.

The product of its digits is 1417176, while the sum is 57.

The square root of 99998931 is about 9999.9465498572. The cubic root of 99998931 is about 464.1572294026.

The spelling of 99998931 in words is "ninety-nine million, nine hundred ninety-eight thousand, nine hundred thirty-one".