13979849 has 6 divisors (see below), whose sum is σ = 15138126. Its totient is φ = 12904320.

The previous prime is 13979843. The next prime is 13979851. The reversal of 13979849 is 94897931.

It can be written as a sum of positive squares in 3 ways, for example, as 525625 + 13454224 = 725^2 + 3668^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13979849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13979797 and 13979806.

It is not an unprimeable number, because it can be changed into a prime (13979843) 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 in 5 ways as a sum of consecutive naturals, for example, 41192 + ... + 41529.

It is an arithmetic number, because the mean of its divisors is an integer number (2523021).

Almost surely, 2^13979849 is an apocalyptic number.

It is an amenable number.

13979849 is a deficient number, since it is larger than the sum of its proper divisors (1158277).

13979849 is an equidigital number, since it uses as much as digits as its factorization.

13979849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82747 (or 82734 counting only the distinct ones).

The product of its digits is 489888, while the sum is 50.

The square root of 13979849 is about 3738.9636264612. The cubic root of 13979849 is about 240.8985357102.

It can be divided in two parts, 139 and 79849, that multiplied together give a palindrome (11099011).

The spelling of 13979849 in words is "thirteen million, nine hundred seventy-nine thousand, eight hundred forty-nine".