99913387 has 16 divisors (see below), whose sum is σ = 115706560. Its totient is φ = 84509568.

The previous prime is 99913367. The next prime is 99913391. The reversal of 99913387 is 78331999.

It is a cyclic number.

It is not a de Polignac number, because 99913387 - 2¹⁵ = 99880619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99913387.

It is not an unprimeable number, because it can be changed into a prime (99913337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251473 + ... + 251869.

It is an arithmetic number, because the mean of its divisors is an integer number (7231660).

Almost surely, 2^99913387 is an apocalyptic number.

99913387 is a deficient number, since it is larger than the sum of its proper divisors (15793173).

99913387 is a wasteful number, since it uses less digits than its factorization.

99913387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790.

The product of its digits is 367416, while the sum is 49.

The square root of 99913387 is about 9995.6684118672. The cubic root of 99913387 is about 464.0248373422.

The spelling of 99913387 in words is "ninety-nine million, nine hundred thirteen thousand, three hundred eighty-seven".