13921263 has 24 divisors (see below), whose sum is σ = 21280896. Its totient is φ = 8755200.

The previous prime is 13921241. The next prime is 13921289. The reversal of 13921263 is 36212931.

13921263 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13921263 - 2⁵ = 13921231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13921223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10831 + ... + 12047.

It is an arithmetic number, because the mean of its divisors is an integer number (886704).

Almost surely, 2^13921263 is an apocalyptic number.

13921263 is a deficient number, since it is larger than the sum of its proper divisors (7359633).

13921263 is a wasteful number, since it uses less digits than its factorization.

13921263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295 (or 1292 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 13921263 is about 3731.1208771628. The cubic root of 13921263 is about 240.5615496502.

The spelling of 13921263 in words is "thirteen million, nine hundred twenty-one thousand, two hundred sixty-three".