99558397 has 4 divisors (see below), whose sum is σ = 99955296. Its totient is φ = 99161500.

The previous prime is 99558383. The next prime is 99558413. The reversal of 99558397 is 79385599.

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.

It is a cyclic number.

It is not a de Polignac number, because 99558397 - 2¹⁹ = 99034109 is a prime.

It is a super-3 number, since 3×99558397³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99558367) 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 in 3 ways as a sum of consecutive naturals, for example, 198073 + ... + 198574.

It is an arithmetic number, because the mean of its divisors is an integer number (24988824).

Almost surely, 2^99558397 is an apocalyptic number.

It is an amenable number.

99558397 is a deficient number, since it is larger than the sum of its proper divisors (396899).

99558397 is a wasteful number, since it uses less digits than its factorization.

99558397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396898.

The product of its digits is 3061800, while the sum is 55.

The square root of 99558397 is about 9977.8954193758. The cubic root of 99558397 is about 463.4746286229.

The spelling of 99558397 in words is "ninety-nine million, five hundred fifty-eight thousand, three hundred ninety-seven".