12161479 has 4 divisors (see below), whose sum is σ = 13267080. Its totient is φ = 11055880.

The previous prime is 12161467. The next prime is 12161483. The reversal of 12161479 is 97416121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12161479 - 2⁵ = 12161447 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12161479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12161449) 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, 552784 + ... + 552805.

It is an arithmetic number, because the mean of its divisors is an integer number (3316770).

Almost surely, 2^12161479 is an apocalyptic number.

12161479 is a deficient number, since it is larger than the sum of its proper divisors (1105601).

12161479 is a wasteful number, since it uses less digits than its factorization.

12161479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105600.

The product of its digits is 3024, while the sum is 31.

The square root of 12161479 is about 3487.3312145536. The cubic root of 12161479 is about 229.9652058267.

The spelling of 12161479 in words is "twelve million, one hundred sixty-one thousand, four hundred seventy-nine".