144137789 has 2 divisors, whose sum is σ = 144137790. Its totient is φ = 144137788.

The previous prime is 144137783. The next prime is 144137809. The reversal of 144137789 is 987731441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140304025 + 3833764 = 11845^2 + 1958^2 .

It is a cyclic number.

It is not a de Polignac number, because 144137789 - 2²⁰ = 143089213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144137783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72068894 + 72068895.

It is an arithmetic number, because the mean of its divisors is an integer number (72068895).

Almost surely, 2^144137789 is an apocalyptic number.

It is an amenable number.

144137789 is a deficient number, since it is larger than the sum of its proper divisors (1).

144137789 is an equidigital number, since it uses as much as digits as its factorization.

144137789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 44.

The square root of 144137789 is about 12005.7398355953. The cubic root of 144137789 is about 524.3154057951.

The spelling of 144137789 in words is "one hundred forty-four million, one hundred thirty-seven thousand, seven hundred eighty-nine".