144597139 has 2 divisors, whose sum is σ = 144597140. Its totient is φ = 144597138.

The previous prime is 144597133. The next prime is 144597169. The reversal of 144597139 is 931795441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144597139 - 2⁵ = 144597107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144597095 and 144597104.

It is not a weakly prime, because it can be changed into another prime (144597133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72298569 + 72298570.

It is an arithmetic number, because the mean of its divisors is an integer number (72298570).

Almost surely, 2^144597139 is an apocalyptic number.

144597139 is a deficient number, since it is larger than the sum of its proper divisors (1).

144597139 is an equidigital number, since it uses as much as digits as its factorization.

144597139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 43.

The square root of 144597139 is about 12024.8550511014. The cubic root of 144597139 is about 524.8717921251.

The spelling of 144597139 in words is "one hundred forty-four million, five hundred ninety-seven thousand, one hundred thirty-nine".