11857049 has 2 divisors, whose sum is σ = 11857050. Its totient is φ = 11857048.

The previous prime is 11857039. The next prime is 11857061. The reversal of 11857049 is 94075811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10679824 + 1177225 = 3268^2 + 1085^2 .

It is a cyclic number.

It is not a de Polignac number, because 11857049 - 2⁴ = 11857033 is a prime.

It is a super-2 number, since 2×11857049² = 281179221976802, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11857039) 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 as a sum of consecutive naturals, namely, 5928524 + 5928525.

It is an arithmetic number, because the mean of its divisors is an integer number (5928525).

Almost surely, 2^11857049 is an apocalyptic number.

It is an amenable number.

11857049 is a deficient number, since it is larger than the sum of its proper divisors (1).

11857049 is an equidigital number, since it uses as much as digits as its factorization.

11857049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 11857049 is about 3443.4065981234. The cubic root of 11857049 is about 228.0301142638.

The spelling of 11857049 in words is "eleven million, eight hundred fifty-seven thousand, forty-nine".