13929740 has 24 divisors (see below), whose sum is σ = 31912272. Its totient is φ = 5065280.

The previous prime is 13929739. The next prime is 13929761. The reversal of 13929740 is 4792931.

It is a self number, because there is not a number n which added to its sum of digits gives 13929740.

It is a congruent number.

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, 31439 + ... + 31878.

It is an arithmetic number, because the mean of its divisors is an integer number (1329678).

Almost surely, 2^13929740 is an apocalyptic number.

13929740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13929740 is an abundant number, since it is smaller than the sum of its proper divisors (17982532).

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

13929740 is a wasteful number, since it uses less digits than its factorization.

13929740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63337 (or 63335 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 13929740 is about 3732.2566899933. The cubic root of 13929740 is about 240.6103676940.

The spelling of 13929740 in words is "thirteen million, nine hundred twenty-nine thousand, seven hundred forty".