99944999 has 16 divisors (see below), whose sum is σ = 124968960. Its totient is φ = 77652960.

The previous prime is 99944981. The next prime is 99945019.

99944999 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-99944999 is a prime.

It is a super-2 number, since 2×99944999² = 19978005650220002, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99943999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27797 + ... + 31185.

It is an arithmetic number, because the mean of its divisors is an integer number (7810560).

Almost surely, 2^99944999 is an apocalyptic number.

99944999 is a deficient number, since it is larger than the sum of its proper divisors (25023961).

99944999 is a wasteful number, since it uses less digits than its factorization.

99944999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3790.

The product of its digits is 8503056, while the sum is 62.

The square root of 99944999 is about 9997.2495717572. The cubic root of 99944999 is about 464.0737704126.

The spelling of 99944999 in words is "ninety-nine million, nine hundred forty-four thousand, nine hundred ninety-nine".