99107999 has 4 divisors (see below), whose sum is σ = 99255936. Its totient is φ = 98960064.

The previous prime is 99107963. The next prime is 99108013. The reversal of 99107999 is 99970199.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99970199 = 7 ⋅14281457.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99107999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99107999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99107959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72959 + ... + 74304.

It is an arithmetic number, because the mean of its divisors is an integer number (24813984).

Almost surely, 2^99107999 is an apocalyptic number.

99107999 is a deficient number, since it is larger than the sum of its proper divisors (147937).

99107999 is a wasteful number, since it uses less digits than its factorization.

99107999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147936.

The product of its (nonzero) digits is 413343, while the sum is 53.

The square root of 99107999 is about 9955.3000457043. The cubic root of 99107999 is about 462.7746587735.

The spelling of 99107999 in words is "ninety-nine million, one hundred seven thousand, nine hundred ninety-nine".