99409633 has 4 divisors (see below), whose sum is σ = 99567808. Its totient is φ = 99251460.

The previous prime is 99409627. The next prime is 99409637. The reversal of 99409633 is 33690499.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99409633 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 99409633.

It is not an unprimeable number, because it can be changed into a prime (99409637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78141 + ... + 79402.

It is an arithmetic number, because the mean of its divisors is an integer number (24891952).

Almost surely, 2^99409633 is an apocalyptic number.

It is an amenable number.

99409633 is a deficient number, since it is larger than the sum of its proper divisors (158175).

99409633 is a wasteful number, since it uses less digits than its factorization.

99409633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158174.

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 99409633 is about 9970.4379542726. The cubic root of 99409633 is about 463.2436663200.

The spelling of 99409633 in words is "ninety-nine million, four hundred nine thousand, six hundred thirty-three".