13945285 has 4 divisors (see below), whose sum is σ = 16734348. Its totient is φ = 11156224.

The previous prime is 13945279. The next prime is 13945301. The reversal of 13945285 is 58254931.

13945285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4198401 + 9746884 = 2049^2 + 3122^2 .

It is a cyclic number.

It is not a de Polignac number, because 13945285 - 2³ = 13945277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1394524 + ... + 1394533.

It is an arithmetic number, because the mean of its divisors is an integer number (4183587).

Almost surely, 2^13945285 is an apocalyptic number.

It is an amenable number.

13945285 is a deficient number, since it is larger than the sum of its proper divisors (2789063).

13945285 is an equidigital number, since it uses as much as digits as its factorization.

13945285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789062.

The product of its digits is 43200, while the sum is 37.

The square root of 13945285 is about 3734.3386295300. The cubic root of 13945285 is about 240.6998380812.

The spelling of 13945285 in words is "thirteen million, nine hundred forty-five thousand, two hundred eighty-five".