13659940 has 24 divisors (see below), whose sum is σ = 32784192. Its totient is φ = 4683360.

The previous prime is 13659937. The next prime is 13659949. The reversal of 13659940 is 4995631.

It is a self number, because there is not a number n which added to its sum of digits gives 13659940.

It is not an unprimeable number, because it can be changed into a prime (13659949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48646 + ... + 48925.

It is an arithmetic number, because the mean of its divisors is an integer number (1366008).

Almost surely, 2^13659940 is an apocalyptic number.

13659940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13659940 is an abundant number, since it is smaller than the sum of its proper divisors (19124252).

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

13659940 is a wasteful number, since it uses less digits than its factorization.

13659940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97587 (or 97585 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 13659940 is about 3695.9356054996. The cubic root of 13659940 is about 239.0467979064.

The spelling of 13659940 in words is "thirteen million, six hundred fifty-nine thousand, nine hundred forty".