98980999 has 4 divisors (see below), whose sum is σ = 106594936. Its totient is φ = 91367064.

The previous prime is 98980997. The next prime is 98981009. The reversal of 98980999 is 99908989.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 98980999 - 2¹ = 98980997 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 (98980997) 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, 3806949 + ... + 3806974.

It is an arithmetic number, because the mean of its divisors is an integer number (26648734).

Almost surely, 2^98980999 is an apocalyptic number.

98980999 is a deficient number, since it is larger than the sum of its proper divisors (7613937).

98980999 is a wasteful number, since it uses less digits than its factorization.

98980999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7613936.

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

The square root of 98980999 is about 9948.9194890702. The cubic root of 98980999 is about 462.5769031118.

The spelling of 98980999 in words is "ninety-eight million, nine hundred eighty thousand, nine hundred ninety-nine".