99644699 has 8 divisors (see below), whose sum is σ = 124232448. Its totient is φ = 77645160.

The previous prime is 99644647. The next prime is 99644707.

99644699 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99644699 - 2⁸ = 99644443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99644099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646967 + ... + 647120.

It is an arithmetic number, because the mean of its divisors is an integer number (15529056).

Almost surely, 2^99644699 is an apocalyptic number.

99644699 is a deficient number, since it is larger than the sum of its proper divisors (24587749).

99644699 is a wasteful number, since it uses less digits than its factorization.

99644699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294105.

The product of its digits is 3779136, while the sum is 56.

The square root of 99644699 is about 9982.2191420545. The cubic root of 99644699 is about 463.6085106344.

The spelling of 99644699 in words is "ninety-nine million, six hundred forty-four thousand, six hundred ninety-nine".