13929880 has 16 divisors (see below), whose sum is σ = 31342320. Its totient is φ = 5571936.

The previous prime is 13929863. The next prime is 13929887. The reversal of 13929880 is 8892931.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 348247 = 13929880 / (1 + 3 + 9 + 2 + 9 + 8 + 8 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13929887) 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 3 ways as a sum of consecutive naturals, for example, 174084 + ... + 174163.

It is an arithmetic number, because the mean of its divisors is an integer number (1958895).

Almost surely, 2^13929880 is an apocalyptic number.

13929880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13929880 is an abundant number, since it is smaller than the sum of its proper divisors (17412440).

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

13929880 is a wasteful number, since it uses less digits than its factorization.

13929880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348258 (or 348254 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 13929880 is about 3732.2754453550. The cubic root of 13929880 is about 240.6111737713.

The spelling of 13929880 in words is "thirteen million, nine hundred twenty-nine thousand, eight hundred eighty".