13479919 has 4 divisors (see below), whose sum is σ = 13610896. Its totient is φ = 13348944.

The previous prime is 13479913. The next prime is 13479943. The reversal of 13479919 is 91997431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91997431 = 89 ⋅1033679.

It is a cyclic number.

It is not a de Polignac number, because 13479919 - 2⁹ = 13479407 is a prime.

It is a super-2 number, since 2×13479919² = 363416432493122, 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 (13479913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65334 + ... + 65539.

It is an arithmetic number, because the mean of its divisors is an integer number (3402724).

Almost surely, 2^13479919 is an apocalyptic number.

13479919 is a deficient number, since it is larger than the sum of its proper divisors (130977).

13479919 is a wasteful number, since it uses less digits than its factorization.

13479919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130976.

The product of its digits is 61236, while the sum is 43.

The square root of 13479919 is about 3671.5009192427. The cubic root of 13479919 is about 237.9920377253.

The spelling of 13479919 in words is "thirteen million, four hundred seventy-nine thousand, nine hundred nineteen".