99923444 has 24 divisors (see below), whose sum is σ = 184320360. Its totient is φ = 47325824.

The previous prime is 99923419. The next prime is 99923449. The reversal of 99923444 is 44432999.

It can be written as a sum of positive squares in 4 ways, for example, as 33500944 + 66422500 = 5788^2 + 8150^2 .

It is a super-3 number, since 3×99923444³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 99923395 and 99923404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99923449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1979 + ... + 14274.

It is an arithmetic number, because the mean of its divisors is an integer number (7680015).

Almost surely, 2^99923444 is an apocalyptic number.

It is an amenable number.

99923444 is a deficient number, since it is larger than the sum of its proper divisors (84396916).

99923444 is a wasteful number, since it uses less digits than its factorization.

99923444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16339 (or 16337 counting only the distinct ones).

The product of its digits is 279936, while the sum is 44.

The square root of 99923444 is about 9996.1714671168. The cubic root of 99923444 is about 464.0404059640.

The spelling of 99923444 in words is "ninety-nine million, nine hundred twenty-three thousand, four hundred forty-four".