13985279 has 16 divisors (see below), whose sum is σ = 18040320. Its totient is φ = 10520160.

The previous prime is 13985263. The next prime is 13985281. The reversal of 13985279 is 97258931.

It is not a de Polignac number, because 13985279 - 2⁴ = 13985263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13984279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 899 + ... + 5364.

It is an arithmetic number, because the mean of its divisors is an integer number (1127520).

Almost surely, 2^13985279 is an apocalyptic number.

13985279 is a deficient number, since it is larger than the sum of its proper divisors (4055041).

13985279 is a wasteful number, since it uses less digits than its factorization.

13985279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6310.

The product of its digits is 136080, while the sum is 44.

The square root of 13985279 is about 3739.6896930093. The cubic root of 13985279 is about 240.9297213052.

It can be divided in two parts, 139852 and 79, that added together give a palindrome (139931).

The spelling of 13985279 in words is "thirteen million, nine hundred eighty-five thousand, two hundred seventy-nine".