99919575 has 180 divisors, whose sum is σ = 230911560. Its totient is φ = 42456960.

The previous prime is 99919571. The next prime is 99919577. The reversal of 99919575 is 57591999.

It is not a de Polignac number, because 99919575 - 2² = 99919571 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99919571) 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 179 ways as a sum of consecutive naturals, for example, 1885249 + ... + 1885301.

It is an arithmetic number, because the mean of its divisors is an integer number (1282842).

Almost surely, 2^99919575 is an apocalyptic number.

99919575 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

99919575 is an abundant number, since it is smaller than the sum of its proper divisors (130991985).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99919575 is a wasteful number, since it uses less digits than its factorization.

99919575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 87 counting only the distinct ones).

The product of its digits is 1148175, while the sum is 54.

The square root of 99919575 is about 9995.9779411521. The cubic root of 99919575 is about 464.0344167272.

The spelling of 99919575 in words is "ninety-nine million, nine hundred nineteen thousand, five hundred seventy-five".