12019879 has 2 divisors, whose sum is σ = 12019880. Its totient is φ = 12019878.

The previous prime is 12019873. The next prime is 12019883. The reversal of 12019879 is 97891021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12019879 - 2³ = 12019871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12019871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6009939 + 6009940.

It is an arithmetic number, because the mean of its divisors is an integer number (6009940).

Almost surely, 2^12019879 is an apocalyptic number.

12019879 is a deficient number, since it is larger than the sum of its proper divisors (1).

12019879 is an equidigital number, since it uses as much as digits as its factorization.

12019879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 12019879 is about 3466.9697143183. The cubic root of 12019879 is about 229.0691997349.

The spelling of 12019879 in words is "twelve million, nineteen thousand, eight hundred seventy-nine".