12279161 has 2 divisors, whose sum is σ = 12279162. Its totient is φ = 12279160.

The previous prime is 12279119. The next prime is 12279167. The reversal of 12279161 is 16197221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10523536 + 1755625 = 3244^2 + 1325^2 .

It is a cyclic number.

It is not a de Polignac number, because 12279161 - 2⁶ = 12279097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12279167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6139580 + 6139581.

It is an arithmetic number, because the mean of its divisors is an integer number (6139581).

Almost surely, 2^12279161 is an apocalyptic number.

It is an amenable number.

12279161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12279161 is an equidigital number, since it uses as much as digits as its factorization.

12279161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 29.

The square root of 12279161 is about 3504.1633808942. The cubic root of 12279161 is about 230.7045879253.

The spelling of 12279161 in words is "twelve million, two hundred seventy-nine thousand, one hundred sixty-one".