99996813 has 12 divisors (see below), whose sum is σ = 165074208. Its totient is φ = 57141000.

The previous prime is 99996803. The next prime is 99996821. The reversal of 99996813 is 31869999.

It is not a de Polignac number, because 99996813 - 2⁴ = 99996797 is a prime.

It is a super-2 number, since 2×99996813² = 19998725220313938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99996813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99996803) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 793563 + ... + 793688.

It is an arithmetic number, because the mean of its divisors is an integer number (13756184).

Almost surely, 2^99996813 is an apocalyptic number.

It is an amenable number.

99996813 is a deficient number, since it is larger than the sum of its proper divisors (65077395).

99996813 is a wasteful number, since it uses less digits than its factorization.

99996813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587264 (or 1587261 counting only the distinct ones).

The product of its digits is 944784, while the sum is 54.

The square root of 99996813 is about 9999.8406487304. The cubic root of 99996813 is about 464.1539523944.

The spelling of 99996813 in words is "ninety-nine million, nine hundred ninety-six thousand, eight hundred thirteen".