99944689 has 8 divisors (see below), whose sum is σ = 107714432. Its totient is φ = 92186640.

The previous prime is 99944687. The next prime is 99944707. The reversal of 99944689 is 98644999.

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

It is not a de Polignac number, because 99944689 - 2¹ = 99944687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99944681) 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, 24232 + ... + 28054.

It is an arithmetic number, because the mean of its divisors is an integer number (13464304).

Almost surely, 2^99944689 is an apocalyptic number.

It is an amenable number.

99944689 is a deficient number, since it is larger than the sum of its proper divisors (7769743).

99944689 is a wasteful number, since it uses less digits than its factorization.

99944689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5847.

The product of its digits is 5038848, while the sum is 58.

The square root of 99944689 is about 9997.2340674809. The cubic root of 99944689 is about 464.0732906053.

The spelling of 99944689 in words is "ninety-nine million, nine hundred forty-four thousand, six hundred eighty-nine".