99315947 has 4 divisors (see below), whose sum is σ = 100074216. Its totient is φ = 98557680.

The previous prime is 99315943. The next prime is 99315959. The reversal of 99315947 is 74951399.

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

It is a cyclic number.

It is not a de Polignac number, because 99315947 - 2² = 99315943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99315943) 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 3 ways as a sum of consecutive naturals, for example, 378938 + ... + 379199.

It is an arithmetic number, because the mean of its divisors is an integer number (25018554).

Almost surely, 2^99315947 is an apocalyptic number.

99315947 is a deficient number, since it is larger than the sum of its proper divisors (758269).

99315947 is a wasteful number, since it uses less digits than its factorization.

99315947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758268.

The product of its digits is 306180, while the sum is 47.

The square root of 99315947 is about 9965.7386580223. The cubic root of 99315947 is about 463.0980966352.

The spelling of 99315947 in words is "ninety-nine million, three hundred fifteen thousand, nine hundred forty-seven".