13899393 has 12 divisors (see below), whose sum is σ = 21133840. Its totient is φ = 8778456.

The previous prime is 13899349. The next prime is 13899401. The reversal of 13899393 is 39399831.

It is not a de Polignac number, because 13899393 - 2⁶ = 13899329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13899343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40471 + ... + 40812.

Almost surely, 2^13899393 is an apocalyptic number.

It is an amenable number.

13899393 is a deficient number, since it is larger than the sum of its proper divisors (7234447).

13899393 is a wasteful number, since it uses less digits than its factorization.

13899393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81308 (or 81305 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 13899393 is about 3728.1889705325. The cubic root of 13899393 is about 240.4355113132.

The spelling of 13899393 in words is "thirteen million, eight hundred ninety-nine thousand, three hundred ninety-three".