99475813 has 4 divisors (see below), whose sum is σ = 101789248. Its totient is φ = 97162380.

The previous prime is 99475793. The next prime is 99475843. The reversal of 99475813 is 31857499.

It is a happy number.

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: 31857499 = 523 ⋅60913.

It is a cyclic number.

It is not a de Polignac number, because 99475813 - 2⁵ = 99475781 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 (99475843) 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, 1156653 + ... + 1156738.

It is an arithmetic number, because the mean of its divisors is an integer number (25447312).

Almost surely, 2^99475813 is an apocalyptic number.

It is an amenable number.

99475813 is a deficient number, since it is larger than the sum of its proper divisors (2313435).

99475813 is a wasteful number, since it uses less digits than its factorization.

99475813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313434.

The product of its digits is 272160, while the sum is 46.

The square root of 99475813 is about 9973.7562131827. The cubic root of 99475813 is about 463.3464419573.

The spelling of 99475813 in words is "ninety-nine million, four hundred seventy-five thousand, eight hundred thirteen".