98989831 has 2 divisors, whose sum is σ = 98989832. Its totient is φ = 98989830.

The previous prime is 98989819. The next prime is 98989841. The reversal of 98989831 is 13898989.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 98989831 - 2¹¹ = 98987783 is a prime.

It is a super-2 number, since 2×98989831² = 19597973282817122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98989801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49494915 + 49494916.

It is an arithmetic number, because the mean of its divisors is an integer number (49494916).

Almost surely, 2^98989831 is an apocalyptic number.

98989831 is a deficient number, since it is larger than the sum of its proper divisors (1).

98989831 is an equidigital number, since it uses as much as digits as its factorization.

98989831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 55.

The square root of 98989831 is about 9949.3633464659. The cubic root of 98989831 is about 462.5906611655.

The spelling of 98989831 in words is "ninety-eight million, nine hundred eighty-nine thousand, eight hundred thirty-one".