2144489139 has 48 divisors (see below), whose sum is σ = 3456311040. Its totient is φ = 1272360960.

The previous prime is 2144489119. The next prime is 2144489141. The reversal of 2144489139 is 9319844412.

It is not a de Polignac number, because 2144489139 - 2⁹ = 2144488627 is a prime.

It is a super-2 number, since 2×2144489139² = 9197667334577922642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2144489094 and 2144489103.

It is not an unprimeable number, because it can be changed into a prime (2144489119) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1134307 + ... + 1136195.

It is an arithmetic number, because the mean of its divisors is an integer number (72006480).

Almost surely, 2^2144489139 is an apocalyptic number.

2144489139 is a deficient number, since it is larger than the sum of its proper divisors (1311821901).

2144489139 is a wasteful number, since it uses less digits than its factorization.

2144489139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252 (or 2249 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 2144489139 is about 46308.6292066608. The cubic root of 2144489139 is about 1289.5591985902.

The spelling of 2144489139 in words is "two billion, one hundred forty-four million, four hundred eighty-nine thousand, one hundred thirty-nine".