98731899 has 16 divisors (see below), whose sum is σ = 167165440. Its totient is φ = 56418120.

The previous prime is 98731891. The next prime is 98731907. The reversal of 98731899 is 99813789.

It is an interprime number because it is at equal distance from previous prime (98731891) and next prime (98731907).

It is not a de Polignac number, because 98731899 - 2³ = 98731891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98731891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261007 + ... + 261384.

It is an arithmetic number, because the mean of its divisors is an integer number (10447840).

Almost surely, 2^98731899 is an apocalyptic number.

98731899 is a deficient number, since it is larger than the sum of its proper divisors (68433541).

98731899 is a wasteful number, since it uses less digits than its factorization.

98731899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522407 (or 522401 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 98731899 is about 9936.3926552849. The cubic root of 98731899 is about 462.1885299032.

The spelling of 98731899 in words is "ninety-eight million, seven hundred thirty-one thousand, eight hundred ninety-nine".