13217479 has 16 divisors (see below), whose sum is σ = 15240960. Its totient is φ = 11344960.

The previous prime is 13217467. The next prime is 13217509. The reversal of 13217479 is 97471231.

It is not a de Polignac number, because 13217479 - 2⁵ = 13217447 is a prime.

It is a super-2 number, since 2×13217479² = 349403502230882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13217429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22224 + ... + 22810.

It is an arithmetic number, because the mean of its divisors is an integer number (952560).

Almost surely, 2^13217479 is an apocalyptic number.

13217479 is a deficient number, since it is larger than the sum of its proper divisors (2023481).

13217479 is a wasteful number, since it uses less digits than its factorization.

13217479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710.

The product of its digits is 10584, while the sum is 34.

The square root of 13217479 is about 3635.5850973399. The cubic root of 13217479 is about 236.4374189105.

The spelling of 13217479 in words is "thirteen million, two hundred seventeen thousand, four hundred seventy-nine".