1144419789 has 16 divisors (see below), whose sum is σ = 1551268224. Its totient is φ = 750360000.

The previous prime is 1144419781. The next prime is 1144419811. The reversal of 1144419789 is 9879144411.

It is a happy number.

It is not a de Polignac number, because 1144419789 - 2³ = 1144419781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144419781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33247 + ... + 58259.

It is an arithmetic number, because the mean of its divisors is an integer number (96954264).

Almost surely, 2^1144419789 is an apocalyptic number.

It is an amenable number.

1144419789 is a deficient number, since it is larger than the sum of its proper divisors (406848435).

1144419789 is a wasteful number, since it uses less digits than its factorization.

1144419789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25268.

The product of its digits is 290304, while the sum is 48.

The square root of 1144419789 is about 33829.2741423756. The cubic root of 1144419789 is about 1045.9922167942.

The spelling of 1144419789 in words is "one billion, one hundred forty-four million, four hundred nineteen thousand, seven hundred eighty-nine".