12154479 has 8 divisors (see below), whose sum is σ = 16222080. Its totient is φ = 8094936.

The previous prime is 12154477. The next prime is 12154487. The reversal of 12154479 is 97445121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12154479 - 2¹ = 12154477 is a prime.

It is a super-2 number, since 2×12154479² = 295462719522882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12154477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4942 + ... + 6980.

It is an arithmetic number, because the mean of its divisors is an integer number (2027760).

Almost surely, 2^12154479 is an apocalyptic number.

12154479 is a deficient number, since it is larger than the sum of its proper divisors (4067601).

12154479 is a wasteful number, since it uses less digits than its factorization.

12154479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029.

The product of its digits is 10080, while the sum is 33.

The square root of 12154479 is about 3486.3274372898. The cubic root of 12154479 is about 229.9210756298.

The spelling of 12154479 in words is "twelve million, one hundred fifty-four thousand, four hundred seventy-nine".