98999980 has 24 divisors (see below), whose sum is σ = 208288080. Its totient is φ = 39526080.

The previous prime is 98999977. The next prime is 98999983. The reversal of 98999980 is 8999989.

It is an interprime number because it is at equal distance from previous prime (98999977) and next prime (98999983).

It is not an unprimeable number, because it can be changed into a prime (98999983) 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, 7086 + ... + 15754.

It is an arithmetic number, because the mean of its divisors is an integer number (8678670).

Almost surely, 2^98999980 is an apocalyptic number.

It is an amenable number.

98999980 is an abundant number, since it is smaller than the sum of its proper divisors (109288100).

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

98999980 is a wasteful number, since it uses less digits than its factorization.

98999980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9249 (or 9247 counting only the distinct ones).

The product of its (nonzero) digits is 3779136, while the sum is 61.

The square root of 98999980 is about 9949.8733660283. The cubic root of 98999980 is about 462.6064697663.

The spelling of 98999980 in words is "ninety-eight million, nine hundred ninety-nine thousand, nine hundred eighty".