99190947 has 4 divisors (see below), whose sum is σ = 132254600. Its totient is φ = 66127296.

The previous prime is 99190943. The next prime is 99190961. The reversal of 99190947 is 74909199.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 99190947 - 2² = 99190943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99190896 and 99190905.

It is not an unprimeable number, because it can be changed into a prime (99190943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16531822 + ... + 16531827.

It is an arithmetic number, because the mean of its divisors is an integer number (33063650).

Almost surely, 2^99190947 is an apocalyptic number.

99190947 is a deficient number, since it is larger than the sum of its proper divisors (33063653).

99190947 is a wasteful number, since it uses less digits than its factorization.

99190947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33063652.

The product of its (nonzero) digits is 183708, while the sum is 48.

The square root of 99190947 is about 9959.4651964852. The cubic root of 99190947 is about 462.9037285045.

The spelling of 99190947 in words is "ninety-nine million, one hundred ninety thousand, nine hundred forty-seven".