99961908 has 24 divisors (see below), whose sum is σ = 235028640. Its totient is φ = 33065760.

The previous prime is 99961891. The next prime is 99961909. The reversal of 99961908 is 80916999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99961909) 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, 30223 + ... + 33366.

It is an arithmetic number, because the mean of its divisors is an integer number (9792860).

Almost surely, 2^99961908 is an apocalyptic number.

It is an amenable number.

99961908 is an abundant number, since it is smaller than the sum of its proper divisors (135066732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99961908 is a wasteful number, since it uses less digits than its factorization.

99961908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63727 (or 63725 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 51.

The square root of 99961908 is about 9998.0952185904. The cubic root of 99961908 is about 464.0999400758.

The spelling of 99961908 in words is "ninety-nine million, nine hundred sixty-one thousand, nine hundred eight".