13892921 has 12 divisors (see below), whose sum is σ = 16234740. Its totient is φ = 11854080.

The previous prime is 13892917. The next prime is 13892939. The reversal of 13892921 is 12929831.

It can be written as a sum of positive squares in 2 ways, for example, as 6817321 + 7075600 = 2611^2 + 2660^2 .

It is not a de Polignac number, because 13892921 - 2² = 13892917 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13892951) 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, 13265 + ... + 14273.

It is an arithmetic number, because the mean of its divisors is an integer number (1352895).

Almost surely, 2^13892921 is an apocalyptic number.

It is an amenable number.

13892921 is a deficient number, since it is larger than the sum of its proper divisors (2341819).

13892921 is a wasteful number, since it uses less digits than its factorization.

13892921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304 (or 1297 counting only the distinct ones).

The product of its digits is 7776, while the sum is 35.

The square root of 13892921 is about 3727.3208877155. The cubic root of 13892921 is about 240.3981873760.

The spelling of 13892921 in words is "thirteen million, eight hundred ninety-two thousand, nine hundred twenty-one".