12151879 has 4 divisors (see below), whose sum is σ = 12162400. Its totient is φ = 12141360.

The previous prime is 12151861. The next prime is 12151891. The reversal of 12151879 is 97815121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 97815121 = 523 ⋅187027.

It is a cyclic number.

It is not a de Polignac number, because 12151879 - 2⁵ = 12151847 is a prime.

It is a super-3 number, since 3×12151879³ (a number of 22 digits) contains 333 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 (12151679) 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 3 ways as a sum of consecutive naturals, for example, 3279 + ... + 5920.

It is an arithmetic number, because the mean of its divisors is an integer number (3040600).

Almost surely, 2^12151879 is an apocalyptic number.

12151879 is a deficient number, since it is larger than the sum of its proper divisors (10521).

12151879 is an equidigital number, since it uses as much as digits as its factorization.

12151879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10520.

The product of its digits is 5040, while the sum is 34.

The square root of 12151879 is about 3485.9545321189. The cubic root of 12151879 is about 229.9046800983.

The spelling of 12151879 in words is "twelve million, one hundred fifty-one thousand, eight hundred seventy-nine".