112409861 has 2 divisors, whose sum is σ = 112409862. Its totient is φ = 112409860.

The previous prime is 112409851. The next prime is 112409867. The reversal of 112409861 is 168904211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95550625 + 16859236 = 9775^2 + 4106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112409861 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112409867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56204930 + 56204931.

It is an arithmetic number, because the mean of its divisors is an integer number (56204931).

Almost surely, 2^112409861 is an apocalyptic number.

It is an amenable number.

112409861 is a deficient number, since it is larger than the sum of its proper divisors (1).

112409861 is an equidigital number, since it uses as much as digits as its factorization.

112409861 is an evil number, because the sum of its binary digits is even.

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

The square root of 112409861 is about 10602.3516730959. The cubic root of 112409861 is about 482.6157271156.

The spelling of 112409861 in words is "one hundred twelve million, four hundred nine thousand, eight hundred sixty-one".