98944991 has 2 divisors, whose sum is σ = 98944992. Its totient is φ = 98944990.

The previous prime is 98944973. The next prime is 98945039. The reversal of 98944991 is 19944989.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 98944991 - 2⁶ = 98944927 is a prime.

It is a super-2 number, since 2×98944991² = 19580222487980162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98944921) 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, 49472495 + 49472496.

It is an arithmetic number, because the mean of its divisors is an integer number (49472496).

Almost surely, 2^98944991 is an apocalyptic number.

98944991 is a deficient number, since it is larger than the sum of its proper divisors (1).

98944991 is an equidigital number, since it uses as much as digits as its factorization.

98944991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 53.

The square root of 98944991 is about 9947.1096807063. The cubic root of 98944991 is about 462.5208031548.

The spelling of 98944991 in words is "ninety-eight million, nine hundred forty-four thousand, nine hundred ninety-one".