98790631 has 2 divisors, whose sum is σ = 98790632. Its totient is φ = 98790630.

The previous prime is 98790619. The next prime is 98790641. The reversal of 98790631 is 13609789.

It is a strong prime.

It is an emirp because it is prime and its reverse (13609789) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 98790631 - 2⁹ = 98790119 is a prime.

It is a super-2 number, since 2×98790631² = 19519177546756322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98790641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49395315 + 49395316.

It is an arithmetic number, because the mean of its divisors is an integer number (49395316).

Almost surely, 2^98790631 is an apocalyptic number.

98790631 is a deficient number, since it is larger than the sum of its proper divisors (1).

98790631 is an equidigital number, since it uses as much as digits as its factorization.

98790631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 98790631 is about 9939.3476144061. The cubic root of 98790631 is about 462.2801580943.

The spelling of 98790631 in words is "ninety-eight million, seven hundred ninety thousand, six hundred thirty-one".