1144044420 has 48 divisors (see below), whose sum is σ = 3206443968. Its totient is φ = 304781440.

The previous prime is 1144044413. The next prime is 1144044439. The reversal of 1144044420 is 244404411.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56722 + ... + 74198.

It is an arithmetic number, because the mean of its divisors is an integer number (66800916).

Almost surely, 2^1144044420 is an apocalyptic number.

1144044420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144044420 is an abundant number, since it is smaller than the sum of its proper divisors (2062399548).

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

1144044420 is a wasteful number, since it uses less digits than its factorization.

1144044420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18580 (or 18578 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 1144044420 is about 33823.7256966172. The cubic root of 1144044420 is about 1045.8778426831.

Adding to 1144044420 its reverse (244404411), we get a palindrome (1388448831).

The spelling of 1144044420 in words is "one billion, one hundred forty-four million, forty-four thousand, four hundred twenty".