98889631 has 2 divisors, whose sum is σ = 98889632. Its totient is φ = 98889630.

The previous prime is 98889619. The next prime is 98889649. The reversal of 98889631 is 13698889.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 98889631 - 2⁷ = 98889503 is a prime.

It is a super-2 number, since 2×98889631² = 19558318238632322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98889611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49444815 + 49444816.

It is an arithmetic number, because the mean of its divisors is an integer number (49444816).

Almost surely, 2^98889631 is an apocalyptic number.

98889631 is a deficient number, since it is larger than the sum of its proper divisors (1).

98889631 is an equidigital number, since it uses as much as digits as its factorization.

98889631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 52.

The square root of 98889631 is about 9944.3265734790. The cubic root of 98889631 is about 462.4345264999.

The spelling of 98889631 in words is "ninety-eight million, eight hundred eighty-nine thousand, six hundred thirty-one".