99944459 has 2 divisors, whose sum is σ = 99944460. Its totient is φ = 99944458.

The previous prime is 99944447. The next prime is 99944461. The reversal of 99944459 is 95444999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99944459 - 2⁴ = 99944443 is a prime.

Together with 99944461, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99944459.

It is not a weakly prime, because it can be changed into another prime (99941459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49972229 + 49972230.

It is an arithmetic number, because the mean of its divisors is an integer number (49972230).

Almost surely, 2^99944459 is an apocalyptic number.

99944459 is a deficient number, since it is larger than the sum of its proper divisors (1).

99944459 is an equidigital number, since it uses as much as digits as its factorization.

99944459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2099520, while the sum is 53.

The square root of 99944459 is about 9997.2225642925. Note that the first 3 decimals coincide. The cubic root of 99944459 is about 464.0729346186.

The spelling of 99944459 in words is "ninety-nine million, nine hundred forty-four thousand, four hundred fifty-nine".