13964388 has 12 divisors (see below), whose sum is σ = 32583600. Its totient is φ = 4654792.

The previous prime is 13964371. The next prime is 13964393. The reversal of 13964388 is 88346931.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

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, 581838 + ... + 581861.

It is an arithmetic number, because the mean of its divisors is an integer number (2715300).

Almost surely, 2^13964388 is an apocalyptic number.

It is an amenable number.

13964388 is an abundant number, since it is smaller than the sum of its proper divisors (18619212).

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

13964388 is a wasteful number, since it uses less digits than its factorization.

13964388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1163706 (or 1163704 counting only the distinct ones).

The product of its digits is 124416, while the sum is 42.

The square root of 13964388 is about 3736.8955029543. The cubic root of 13964388 is about 240.8096957866.

The spelling of 13964388 in words is "thirteen million, nine hundred sixty-four thousand, three hundred eighty-eight".