98900557 has 4 divisors (see below), whose sum is σ = 113029216. Its totient is φ = 84771900.

The previous prime is 98900507. The next prime is 98900561. The reversal of 98900557 is 75500989.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75500989 = 7841 ⋅9629.

It is a cyclic number.

It is not a de Polignac number, because 98900557 - 2¹¹ = 98898509 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 (98900507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7064319 + ... + 7064332.

It is an arithmetic number, because the mean of its divisors is an integer number (28257304).

Almost surely, 2^98900557 is an apocalyptic number.

It is an amenable number.

98900557 is a deficient number, since it is larger than the sum of its proper divisors (14128659).

98900557 is a wasteful number, since it uses less digits than its factorization.

98900557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14128658.

The product of its (nonzero) digits is 113400, while the sum is 43.

The square root of 98900557 is about 9944.8759167724. The cubic root of 98900557 is about 462.4515568448.

The spelling of 98900557 in words is "ninety-eight million, nine hundred thousand, five hundred fifty-seven".