99941980 has 36 divisors (see below), whose sum is σ = 222963048. Its totient is φ = 37623040.

The previous prime is 99941951. The next prime is 99941981. The reversal of 99941980 is 8914999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99941981) 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, 2866 + ... + 14425.

It is an arithmetic number, because the mean of its divisors is an integer number (6193418).

Almost surely, 2^99941980 is an apocalyptic number.

It is an amenable number.

99941980 is an abundant number, since it is smaller than the sum of its proper divisors (123021068).

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

99941980 is a wasteful number, since it uses less digits than its factorization.

99941980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17334 (or 17315 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 49.

The square root of 99941980 is about 9997.0985790878. The cubic root of 99941980 is about 464.0690976664.

The spelling of 99941980 in words is "ninety-nine million, nine hundred forty-one thousand, nine hundred eighty".