99838775 has 12 divisors (see below), whose sum is σ = 124207824. Its totient is φ = 79608000.

The previous prime is 99838769. The next prime is 99838799. The reversal of 99838775 is 57783899.

It is not a de Polignac number, because 99838775 - 2⁴ = 99838759 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99838775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1355 + ... + 14195.

It is an arithmetic number, because the mean of its divisors is an integer number (10350652).

Almost surely, 2^99838775 is an apocalyptic number.

99838775 is a deficient number, since it is larger than the sum of its proper divisors (24369049).

99838775 is a wasteful number, since it uses less digits than its factorization.

99838775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13162 (or 13157 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 56.

The square root of 99838775 is about 9991.9354981905. The cubic root of 99838775 is about 463.9093024644.

The spelling of 99838775 in words is "ninety-nine million, eight hundred thirty-eight thousand, seven hundred seventy-five".