99193919 has 8 divisors (see below), whose sum is σ = 108939600. Its totient is φ = 89569600.

The previous prime is 99193909. The next prime is 99193931. The reversal of 99193919 is 91939199.

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 99193919 - 2⁸ = 99193663 is a prime.

It is a super-2 number, since 2×99193919² = 19678867133157122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99193909) 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, 28622 + ... + 31899.

It is an arithmetic number, because the mean of its divisors is an integer number (13617450).

Almost surely, 2^99193919 is an apocalyptic number.

99193919 is a deficient number, since it is larger than the sum of its proper divisors (9745681).

99193919 is a wasteful number, since it uses less digits than its factorization.

99193919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60681.

The product of its digits is 177147, while the sum is 50.

The square root of 99193919 is about 9959.6144001663. The cubic root of 99193919 is about 462.9083516957.

The spelling of 99193919 in words is "ninety-nine million, one hundred ninety-three thousand, nine hundred nineteen".