1144839740 has 48 divisors (see below), whose sum is σ = 2683739520. Its totient is φ = 406620480.

The previous prime is 1144839719. The next prime is 1144839749. The reversal of 1144839740 is 479384411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144839749) 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, 51050 + ... + 69969.

It is an arithmetic number, because the mean of its divisors is an integer number (55911240).

Almost surely, 2^1144839740 is an apocalyptic number.

1144839740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144839740 is an abundant number, since it is smaller than the sum of its proper divisors (1538899780).

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

1144839740 is a wasteful number, since it uses less digits than its factorization.

1144839740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121082 (or 121080 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 1144839740 is about 33835.4804901600. The cubic root of 1144839740 is about 1046.1201453050.

The spelling of 1144839740 in words is "one billion, one hundred forty-four million, eight hundred thirty-nine thousand, seven hundred forty".