11861429 has 2 divisors, whose sum is σ = 11861430. Its totient is φ = 11861428.

The previous prime is 11861413. The next prime is 11861441. The reversal of 11861429 is 92416811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8614225 + 3247204 = 2935^2 + 1802^2 .

It is a cyclic number.

It is not a de Polignac number, because 11861429 - 2⁴ = 11861413 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11861395 and 11861404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11864429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5930714 + 5930715.

It is an arithmetic number, because the mean of its divisors is an integer number (5930715).

Almost surely, 2^11861429 is an apocalyptic number.

It is an amenable number.

11861429 is a deficient number, since it is larger than the sum of its proper divisors (1).

11861429 is an equidigital number, since it uses as much as digits as its factorization.

11861429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 32.

The square root of 11861429 is about 3444.0425374841. The cubic root of 11861429 is about 228.0581889544.

The spelling of 11861429 in words is "eleven million, eight hundred sixty-one thousand, four hundred twenty-nine".