13961388 has 24 divisors (see below), whose sum is σ = 37230592. Its totient is φ = 3988944.

The previous prime is 13961359. The next prime is 13961399. The reversal of 13961388 is 88316931.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83020 + ... + 83187.

Almost surely, 2^13961388 is an apocalyptic number.

It is an amenable number.

13961388 is an abundant number, since it is smaller than the sum of its proper divisors (23269204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13961388 is a wasteful number, since it uses less digits than its factorization.

13961388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166221 (or 166219 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 13961388 is about 3736.4940786786. The cubic root of 13961388 is about 240.7924499938.

The spelling of 13961388 in words is "thirteen million, nine hundred sixty-one thousand, three hundred eighty-eight".