13938785 has 12 divisors (see below), whose sum is σ = 19457748. Its totient is φ = 9557856.

The previous prime is 13938779. The next prime is 13938797. The reversal of 13938785 is 58783931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3389281 + 10549504 = 1841^2 + 3248^2 .

It is not a de Polignac number, because 13938785 - 2¹⁴ = 13922401 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28202 + ... + 28691.

It is an arithmetic number, because the mean of its divisors is an integer number (1621479).

Almost surely, 2^13938785 is an apocalyptic number.

It is an amenable number.

13938785 is a deficient number, since it is larger than the sum of its proper divisors (5518963).

13938785 is an equidigital number, since it uses as much as digits as its factorization.

13938785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56912 (or 56905 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 13938785 is about 3733.4682267297. The cubic root of 13938785 is about 240.6624349472.

The spelling of 13938785 in words is "thirteen million, nine hundred thirty-eight thousand, seven hundred eighty-five".