99908207 has 6 divisors (see below), whose sum is σ = 116219808. Its totient is φ = 85635564.

The previous prime is 99908197. The next prime is 99908239. The reversal of 99908207 is 70280999.

It is not a de Polignac number, because 99908207 - 2⁶ = 99908143 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 (99908287) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1019423 + ... + 1019520.

It is an arithmetic number, because the mean of its divisors is an integer number (19369968).

Almost surely, 2^99908207 is an apocalyptic number.

99908207 is a deficient number, since it is larger than the sum of its proper divisors (16311601).

99908207 is a wasteful number, since it uses less digits than its factorization.

99908207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038957 (or 2038950 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 99908207 is about 9995.4092962720. The cubic root of 99908207 is about 464.0168180958.

The spelling of 99908207 in words is "ninety-nine million, nine hundred eight thousand, two hundred seven".