1159644 has 24 divisors (see below), whose sum is σ = 2773008. Its totient is φ = 376960.

The previous prime is 1159633. The next prime is 1159649. The reversal of 1159644 is 4469511.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1159649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687 + ... + 1670.

It is an arithmetic number, because the mean of its divisors is an integer number (115542).

2^1159644 is an apocalyptic number.

It is an amenable number.

1159644 is an abundant number, since it is smaller than the sum of its proper divisors (1613364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1159644 is a wasteful number, since it uses less digits than its factorization.

1159644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2405 (or 2403 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 1159644 is about 1076.8676798939. The cubic root of 1159644 is about 105.0610076301.

The spelling of 1159644 in words is "one million, one hundred fifty-nine thousand, six hundred forty-four".