13979453206 has 4 divisors (see below), whose sum is σ = 20969179812. Its totient is φ = 6989726602.

The previous prime is 13979453203. The next prime is 13979453227. The reversal of 13979453206 is 60235497931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60235497931 = 7 ⋅8605071133.

It is a super-2 number, since 2×13979453206² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13979453206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13979453203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3494863300 + ... + 3494863303.

It is an arithmetic number, because the mean of its divisors is an integer number (5242294953).

Almost surely, 2^13979453206 is an apocalyptic number.

13979453206 is a deficient number, since it is larger than the sum of its proper divisors (6989726606).

13979453206 is an equidigital number, since it uses as much as digits as its factorization.

13979453206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6989726605.

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 13979453206 in words is "thirteen billion, nine hundred seventy-nine million, four hundred fifty-three thousand, two hundred six".