99915826 has 4 divisors (see below), whose sum is σ = 149873742. Its totient is φ = 49957912.

The previous prime is 99915797. The next prime is 99915833. The reversal of 99915826 is 62851999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 89019225 + 10896601 = 9435^2 + 3301^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 99915826.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24978955 + ... + 24978958.

Almost surely, 2^99915826 is an apocalyptic number.

99915826 is a deficient number, since it is larger than the sum of its proper divisors (49957916).

99915826 is a wasteful number, since it uses less digits than its factorization.

99915826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49957915.

The product of its digits is 349920, while the sum is 49.

The square root of 99915826 is about 9995.7904139693. The cubic root of 99915826 is about 464.0286131037.

The spelling of 99915826 in words is "ninety-nine million, nine hundred fifteen thousand, eight hundred twenty-six".