98144991 has 24 divisors (see below), whose sum is σ = 165328800. Its totient is φ = 56081088.

The previous prime is 98144987. The next prime is 98144993. The reversal of 98144991 is 19944189.

It is not a de Polignac number, because 98144991 - 2² = 98144987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98144993) 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 in 23 ways as a sum of consecutive naturals, for example, 12810 + ... + 18983.

It is an arithmetic number, because the mean of its divisors is an integer number (6888700).

Almost surely, 2^98144991 is an apocalyptic number.

98144991 is a deficient number, since it is larger than the sum of its proper divisors (67183809).

98144991 is a wasteful number, since it uses less digits than its factorization.

98144991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31820 (or 31803 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 98144991 is about 9906.8153813423. The cubic root of 98144991 is about 461.2708885158.

The spelling of 98144991 in words is "ninety-eight million, one hundred forty-four thousand, nine hundred ninety-one".