1140044249 has 4 divisors (see below), whose sum is σ = 1140111780. Its totient is φ = 1139976720.

The previous prime is 1140044221. The next prime is 1140044261. The reversal of 1140044249 is 9424400411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9424400411 = 15791 ⋅596821.

It can be written as a sum of positive squares in 2 ways, for example, as 924160000 + 215884249 = 30400^2 + 14693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140044249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140044149) 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, 16619 + ... + 50559.

It is an arithmetic number, because the mean of its divisors is an integer number (285027945).

Almost surely, 2^1140044249 is an apocalyptic number.

It is an amenable number.

1140044249 is a deficient number, since it is larger than the sum of its proper divisors (67531).

1140044249 is an equidigital number, since it uses as much as digits as its factorization.

1140044249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67530.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1140044249 is about 33764.5412970471. The cubic root of 1140044249 is about 1044.6574425682.

The spelling of 1140044249 in words is "one billion, one hundred forty million, forty-four thousand, two hundred forty-nine".