98940591 has 6 divisors (see below), whose sum is σ = 142914200. Its totient is φ = 65960388.

The previous prime is 98940587. The next prime is 98940649. The reversal of 98940591 is 19504989.

It is not a de Polignac number, because 98940591 - 2² = 98940587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98940521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5496691 + ... + 5496708.

Almost surely, 2^98940591 is an apocalyptic number.

98940591 is a deficient number, since it is larger than the sum of its proper divisors (43973609).

98940591 is a wasteful number, since it uses less digits than its factorization.

98940591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10993405 (or 10993402 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 98940591 is about 9946.8885084734. Note that the first 3 decimals coincide. The cubic root of 98940591 is about 462.5139470837.

The spelling of 98940591 in words is "ninety-eight million, nine hundred forty thousand, five hundred ninety-one".