13890393 has 16 divisors (see below), whose sum is σ = 22449600. Its totient is φ = 8418240.

The previous prime is 13890379. The next prime is 13890407. The reversal of 13890393 is 39309831.

It is an interprime number because it is at equal distance from previous prime (13890379) and next prime (13890407).

It is not a de Polignac number, because 13890393 - 2⁶ = 13890329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13890313) 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, 23088 + ... + 23681.

It is an arithmetic number, because the mean of its divisors is an integer number (1403100).

Almost surely, 2^13890393 is an apocalyptic number.

It is an amenable number.

13890393 is a deficient number, since it is larger than the sum of its proper divisors (8559207).

13890393 is a wasteful number, since it uses less digits than its factorization.

13890393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46789 (or 46783 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 13890393 is about 3726.9817547179. The cubic root of 13890393 is about 240.3836052858.

The spelling of 13890393 in words is "thirteen million, eight hundred ninety thousand, three hundred ninety-three".