99944455 has 8 divisors (see below), whose sum is σ = 129159072. Its totient is φ = 73805088.

The previous prime is 99944447. The next prime is 99944459. The reversal of 99944455 is 55444999.

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 99944455 - 2³ = 99944447 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99944399 and 99944408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99944459) 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, 768739 + ... + 768868.

It is an arithmetic number, because the mean of its divisors is an integer number (16144884).

Almost surely, 2^99944455 is an apocalyptic number.

99944455 is a deficient number, since it is larger than the sum of its proper divisors (29214617).

99944455 is a wasteful number, since it uses less digits than its factorization.

99944455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537625.

The product of its digits is 1166400, while the sum is 49.

The square root of 99944455 is about 9997.2223642370. Note that the first 3 decimals coincide. The cubic root of 99944455 is about 464.0729284275.

It can be divided in two parts, 999 and 44455, that added together give a palindrome (45454).

The spelling of 99944455 in words is "ninety-nine million, nine hundred forty-four thousand, four hundred fifty-five".