13979364 has 72 divisors (see below), whose sum is σ = 39428928. Its totient is φ = 3775680.

The previous prime is 13979347. The next prime is 13979387. The reversal of 13979364 is 46397931.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 30094 + ... + 30554.

It is an arithmetic number, because the mean of its divisors is an integer number (547624).

Almost surely, 2^13979364 is an apocalyptic number.

13979364 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13979364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19714464).

13979364 is an abundant number, since it is smaller than the sum of its proper divisors (25449564).

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

13979364 is a wasteful number, since it uses less digits than its factorization.

13979364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513 (or 492 counting only the distinct ones).

The product of its digits is 122472, while the sum is 42.

The square root of 13979364 is about 3738.8987683541. The cubic root of 13979364 is about 240.8957498637.

The spelling of 13979364 in words is "thirteen million, nine hundred seventy-nine thousand, three hundred sixty-four".