9913599 has 6 divisors (see below), whose sum is σ = 14319656. Its totient is φ = 6609060.

The previous prime is 9913571. The next prime is 9913609. The reversal of 9913599 is 9953199.

It is not a de Polignac number, because 9913599 - 2¹⁷ = 9782527 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9913549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 550747 + ... + 550764.

Almost surely, 2^9913599 is an apocalyptic number.

9913599 is a deficient number, since it is larger than the sum of its proper divisors (4406057).

9913599 is a wasteful number, since it uses less digits than its factorization.

9913599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101517 (or 1101514 counting only the distinct ones).

The product of its digits is 98415, while the sum is 45.

The square root of 9913599 is about 3148.5868258633. The cubic root of 9913599 is about 214.8211889878.

The spelling of 9913599 in words is "nine million, nine hundred thirteen thousand, five hundred ninety-nine".