12279081 has 4 divisors (see below), whose sum is σ = 16372112. Its totient is φ = 8186052.

The previous prime is 12279061. The next prime is 12279089. The reversal of 12279081 is 18097221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12279081 - 2⁶ = 12279017 is a prime.

It is a super-2 number, since 2×12279081² = 301551660409122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12279089) 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, 2046511 + ... + 2046516.

It is an arithmetic number, because the mean of its divisors is an integer number (4093028).

Almost surely, 2^12279081 is an apocalyptic number.

It is an amenable number.

12279081 is a deficient number, since it is larger than the sum of its proper divisors (4093031).

12279081 is an equidigital number, since it uses as much as digits as its factorization.

12279081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093030.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12279081 is about 3504.1519658828. The cubic root of 12279081 is about 230.7040869029.

The spelling of 12279081 in words is "twelve million, two hundred seventy-nine thousand, eighty-one".