13940188 has 6 divisors (see below), whose sum is σ = 24395336. Its totient is φ = 6970092.

The previous prime is 13940183. The next prime is 13940189. The reversal of 13940188 is 88104931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13940183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1742520 + ... + 1742527.

Almost surely, 2^13940188 is an apocalyptic number.

It is an amenable number.

13940188 is a deficient number, since it is larger than the sum of its proper divisors (10455148).

13940188 is a wasteful number, since it uses less digits than its factorization.

13940188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485051 (or 3485049 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 13940188 is about 3733.6561169985. The cubic root of 13940188 is about 240.6705092537.

The spelling of 13940188 in words is "thirteen million, nine hundred forty thousand, one hundred eighty-eight".