99998379 has 24 divisors (see below), whose sum is σ = 155911392. Its totient is φ = 61395840.

The previous prime is 99998377. The next prime is 99998413. The reversal of 99998379 is 97389999.

It is not a de Polignac number, because 99998379 - 2¹ = 99998377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99998377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75039 + ... + 76359.

It is an arithmetic number, because the mean of its divisors is an integer number (6496308).

Almost surely, 2^99998379 is an apocalyptic number.

99998379 is a deficient number, since it is larger than the sum of its proper divisors (55913013).

99998379 is a wasteful number, since it uses less digits than its factorization.

99998379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1987 (or 1984 counting only the distinct ones).

The product of its digits is 9920232, while the sum is 63.

The square root of 99998379 is about 9999.9189496715. The cubic root of 99998379 is about 464.1563753426.

The spelling of 99998379 in words is "ninety-nine million, nine hundred ninety-eight thousand, three hundred seventy-nine".