98999997 has 12 divisors (see below), whose sum is σ = 136712160. Its totient is φ = 63722512.

The previous prime is 98999987. The next prime is 99000007. The reversal of 98999997 is 79999989.

It is an interprime number because it is at equal distance from previous prime (98999987) and next prime (99000007).

It is not a de Polignac number, because 98999997 - 2¹⁶ = 98934461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98999917) 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, 17097 + ... + 22142.

It is an arithmetic number, because the mean of its divisors is an integer number (11392680).

Almost surely, 2^98999997 is an apocalyptic number.

It is an amenable number.

98999997 is a deficient number, since it is larger than the sum of its proper divisors (37712163).

98999997 is a wasteful number, since it uses less digits than its factorization.

98999997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39300 (or 39271 counting only the distinct ones).

The product of its digits is 29760696, while the sum is 69.

The square root of 98999997 is about 9949.8742203105. The cubic root of 98999997 is about 462.6064962455.

The spelling of 98999997 in words is "ninety-eight million, nine hundred ninety-nine thousand, nine hundred ninety-seven".