12479719 has 4 divisors (see below), whose sum is σ = 14262544. Its totient is φ = 10696896.

The previous prime is 12479711. The next prime is 12479723. The reversal of 12479719 is 91797421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91797421 = 541 ⋅169681.

It is not a de Polignac number, because 12479719 - 2³ = 12479711 is a prime.

It is a super-2 number, since 2×12479719² = 311486772637922, 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 (12479711) 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, 891402 + ... + 891415.

It is an arithmetic number, because the mean of its divisors is an integer number (3565636).

Almost surely, 2^12479719 is an apocalyptic number.

12479719 is a deficient number, since it is larger than the sum of its proper divisors (1782825).

12479719 is an equidigital number, since it uses as much as digits as its factorization.

12479719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782824.

The product of its digits is 31752, while the sum is 40.

The square root of 12479719 is about 3532.6645750764. The cubic root of 12479719 is about 231.9538589868.

The spelling of 12479719 in words is "twelve million, four hundred seventy-nine thousand, seven hundred nineteen".