99440999 has 8 divisors (see below), whose sum is σ = 113775648. Its totient is φ = 85138560.

The previous prime is 99440993. The next prime is 99441053. The reversal of 99440999 is 99904499.

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 99440999 - 2⁸ = 99440743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99440999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99440993) 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, 1022 + ... + 14139.

It is an arithmetic number, because the mean of its divisors is an integer number (14221956).

Almost surely, 2^99440999 is an apocalyptic number.

99440999 is a deficient number, since it is larger than the sum of its proper divisors (14334649).

99440999 is a wasteful number, since it uses less digits than its factorization.

99440999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16105.

The product of its (nonzero) digits is 944784, while the sum is 53.

The square root of 99440999 is about 9972.0107801787. The cubic root of 99440999 is about 463.2923825006.

The spelling of 99440999 in words is "ninety-nine million, four hundred forty thousand, nine hundred ninety-nine".