13456919 has 8 divisors (see below), whose sum is σ = 15693600. Its totient is φ = 11534208.

The previous prime is 13456903. The next prime is 13456931. The reversal of 13456919 is 91965431.

It is not a de Polignac number, because 13456919 - 2⁴ = 13456903 is a prime.

It is a super-2 number, since 2×13456919² = 362177337945122, 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 (13456999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19274 + ... + 19959.

It is an arithmetic number, because the mean of its divisors is an integer number (1961700).

Almost surely, 2^13456919 is an apocalyptic number.

13456919 is a deficient number, since it is larger than the sum of its proper divisors (2236681).

13456919 is an frugal number, since it uses more digits than its factorization.

13456919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39254 (or 39240 counting only the distinct ones).

The product of its digits is 29160, while the sum is 38.

The square root of 13456919 is about 3668.3673480174. The cubic root of 13456919 is about 237.8566033546.

The spelling of 13456919 in words is "thirteen million, four hundred fifty-six thousand, nine hundred nineteen".