1149644 has 12 divisors (see below), whose sum is σ = 2033304. Its totient is φ = 568704.

The previous prime is 1149641. The next prime is 1149661. The reversal of 1149644 is 4469411.

It is a happy number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1149641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094 + ... + 1869.

It is an arithmetic number, because the mean of its divisors is an integer number (169442).

2^1149644 is an apocalyptic number.

It is an amenable number.

1149644 is a deficient number, since it is larger than the sum of its proper divisors (883660).

1149644 is a wasteful number, since it uses less digits than its factorization.

1149644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3064 (or 3062 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 1149644 is about 1072.2145307726. The cubic root of 1149644 is about 104.7581432599.

The spelling of 1149644 in words is "one million, one hundred forty-nine thousand, six hundred forty-four".