11644859 has 2 divisors, whose sum is σ = 11644860. Its totient is φ = 11644858.

The previous prime is 11644823. The next prime is 11644901. The reversal of 11644859 is 95844611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11644859 - 2¹² = 11640763 is a prime.

It is a super-2 number, since 2×11644859² = 271205482259762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11644819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5822429 + 5822430.

It is an arithmetic number, because the mean of its divisors is an integer number (5822430).

Almost surely, 2^11644859 is an apocalyptic number.

11644859 is a deficient number, since it is larger than the sum of its proper divisors (1).

11644859 is an equidigital number, since it uses as much as digits as its factorization.

11644859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 38.

The square root of 11644859 is about 3412.4564466085. The cubic root of 11644859 is about 226.6616667967.

The spelling of 11644859 in words is "eleven million, six hundred forty-four thousand, eight hundred fifty-nine".