99998013 has 16 divisors (see below), whose sum is σ = 137353280. Its totient is φ = 64665216.

The previous prime is 99997981. The next prime is 99998021. The reversal of 99998013 is 31089999.

It is not a de Polignac number, because 99998013 - 2⁵ = 99997981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99998413) 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, 40881 + ... + 43257.

It is an arithmetic number, because the mean of its divisors is an integer number (8584580).

Almost surely, 2^99998013 is an apocalyptic number.

It is an amenable number.

99998013 is a deficient number, since it is larger than the sum of its proper divisors (37355267).

99998013 is a wasteful number, since it uses less digits than its factorization.

99998013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796.

The product of its (nonzero) digits is 157464, while the sum is 48.

The square root of 99998013 is about 9999.9006495065. The cubic root of 99998013 is about 464.1558090619.

The spelling of 99998013 in words is "ninety-nine million, nine hundred ninety-eight thousand, thirteen".