13979090 has 8 divisors (see below), whose sum is σ = 25162380. Its totient is φ = 5591632.

The previous prime is 13979089. The next prime is 13979093. The reversal of 13979090 is 9097931.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13786369 + 192721 = 3713^2 + 439^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13979093) 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 3 ways as a sum of consecutive naturals, for example, 698945 + ... + 698964.

Almost surely, 2^13979090 is an apocalyptic number.

13979090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13979090 is a deficient number, since it is larger than the sum of its proper divisors (11183290).

13979090 is a wasteful number, since it uses less digits than its factorization.

13979090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397916.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 13979090 is about 3738.8621263695. The cubic root of 13979090 is about 240.8941759755.

The spelling of 13979090 in words is "thirteen million, nine hundred seventy-nine thousand, ninety".