13979146 has 4 divisors (see below), whose sum is σ = 20968722. Its totient is φ = 6989572.

The previous prime is 13979143. The next prime is 13979149. The reversal of 13979146 is 64197931.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13979143) and next prime (13979149).

It can be written as a sum of positive squares in only one way, i.e., 7502121 + 6477025 = 2739^2 + 2545^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13979099 and 13979108.

It is not an unprimeable number, because it can be changed into a prime (13979143) 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 as a sum of consecutive naturals, namely, 3494785 + ... + 3494788.

Almost surely, 2^13979146 is an apocalyptic number.

13979146 is a deficient number, since it is larger than the sum of its proper divisors (6989576).

13979146 is an equidigital number, since it uses as much as digits as its factorization.

13979146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6989575.

The product of its digits is 40824, while the sum is 40.

The square root of 13979146 is about 3738.8696152714. The cubic root of 13979146 is about 240.8944976478.

The spelling of 13979146 in words is "thirteen million, nine hundred seventy-nine thousand, one hundred forty-six".