13279387 has 10 divisors (see below), whose sum is σ = 14623340. Its totient is φ = 12058860.

The previous prime is 13279373. The next prime is 13279391. The reversal of 13279387 is 78397231.

It is not a de Polignac number, because 13279387 - 2¹⁵ = 13246619 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (13289387) 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 9 ways as a sum of consecutive naturals, for example, 14188 + ... + 15094.

It is an arithmetic number, because the mean of its divisors is an integer number (1462334).

Almost surely, 2^13279387 is an apocalyptic number.

13279387 is a deficient number, since it is larger than the sum of its proper divisors (1343953).

13279387 is an frugal number, since it uses more digits than its factorization.

13279387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951 (or 918 counting only the distinct ones).

The product of its digits is 63504, while the sum is 40.

The square root of 13279387 is about 3644.0893238229. The cubic root of 13279387 is about 236.8059857702.

The spelling of 13279387 in words is "thirteen million, two hundred seventy-nine thousand, three hundred eighty-seven".