99618379 has 4 divisors (see below), whose sum is σ = 113849584. Its totient is φ = 85387176.

The previous prime is 99618377. The next prime is 99618383. The reversal of 99618379 is 97381699.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97381699 = 619 ⋅157321.

It is not a de Polignac number, because 99618379 - 2¹ = 99618377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99618371) 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, 7115592 + ... + 7115605.

It is an arithmetic number, because the mean of its divisors is an integer number (28462396).

Almost surely, 2^99618379 is an apocalyptic number.

99618379 is a deficient number, since it is larger than the sum of its proper divisors (14231205).

99618379 is a wasteful number, since it uses less digits than its factorization.

99618379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14231204.

The product of its digits is 734832, while the sum is 52.

The square root of 99618379 is about 9980.9007108577. The cubic root of 99618379 is about 463.5676880898.

The spelling of 99618379 in words is "ninety-nine million, six hundred eighteen thousand, three hundred seventy-nine".