1144209444 has 24 divisors (see below), whose sum is σ = 3051225408. Its totient is φ = 326916960.

The previous prime is 1144209389. The next prime is 1144209461. The reversal of 1144209444 is 4449024411.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6810687 + ... + 6810854.

It is an arithmetic number, because the mean of its divisors is an integer number (127134392).

Almost surely, 2^1144209444 is an apocalyptic number.

1144209444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1144209444 is an abundant number, since it is smaller than the sum of its proper divisors (1907015964).

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

1144209444 is a wasteful number, since it uses less digits than its factorization.

1144209444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13621555 (or 13621553 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 1144209444 is about 33826.1650797131. The cubic root of 1144209444 is about 1045.9281282152.

The spelling of 1144209444 in words is "one billion, one hundred forty-four million, two hundred nine thousand, four hundred forty-four".