12440079 has 24 divisors (see below), whose sum is σ = 19743360. Its totient is φ = 7512912.

The previous prime is 12440059. The next prime is 12440089. The reversal of 12440079 is 97004421.

It is a happy number.

It is not a de Polignac number, because 12440079 - 2⁷ = 12439951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2352 + ... + 5514.

It is an arithmetic number, because the mean of its divisors is an integer number (822640).

Almost surely, 2^12440079 is an apocalyptic number.

12440079 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12440079 is a deficient number, since it is larger than the sum of its proper divisors (7303281).

12440079 is a wasteful number, since it uses less digits than its factorization.

12440079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211 (or 3208 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 12440079 is about 3527.0496168894. The cubic root of 12440079 is about 231.7080093450.

The spelling of 12440079 in words is "twelve million, four hundred forty thousand, seventy-nine".