13920893 has 4 divisors (see below), whose sum is σ = 15909600. Its totient is φ = 11932188.

The previous prime is 13920887. The next prime is 13920913. The reversal of 13920893 is 39802931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39802931 = 7 ⋅5686133.

It is a cyclic number.

It is not a de Polignac number, because 13920893 - 2⁴ = 13920877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13920833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994343 + ... + 994356.

It is an arithmetic number, because the mean of its divisors is an integer number (3977400).

Almost surely, 2^13920893 is an apocalyptic number.

It is an amenable number.

13920893 is a deficient number, since it is larger than the sum of its proper divisors (1988707).

13920893 is an equidigital number, since it uses as much as digits as its factorization.

13920893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988706.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 13920893 is about 3731.0712938779. The cubic root of 13920893 is about 240.5594184125.

The spelling of 13920893 in words is "thirteen million, nine hundred twenty thousand, eight hundred ninety-three".