13947790 has 16 divisors (see below), whose sum is σ = 25719120. Its totient is φ = 5442880.

The previous prime is 13947763. The next prime is 13947793. The reversal of 13947790 is 9774931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13947793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16600 + ... + 17419.

It is an arithmetic number, because the mean of its divisors is an integer number (1607445).

Almost surely, 2^13947790 is an apocalyptic number.

13947790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13947790 is a deficient number, since it is larger than the sum of its proper divisors (11771330).

13947790 is a wasteful number, since it uses less digits than its factorization.

13947790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34067.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 13947790 is about 3734.6740152254. The cubic root of 13947790 is about 240.7142495709.

The spelling of 13947790 in words is "thirteen million, nine hundred forty-seven thousand, seven hundred ninety".