144137809 has 2 divisors, whose sum is σ = 144137810. Its totient is φ = 144137808.

The previous prime is 144137789. The next prime is 144137821. The reversal of 144137809 is 908731441.

144137809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143041600 + 1096209 = 11960^2 + 1047^2 .

It is a cyclic number.

It is not a de Polignac number, because 144137809 - 2¹⁵ = 144105041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144137009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72068904 + 72068905.

It is an arithmetic number, because the mean of its divisors is an integer number (72068905).

Almost surely, 2^144137809 is an apocalyptic number.

It is an amenable number.

144137809 is a deficient number, since it is larger than the sum of its proper divisors (1).

144137809 is an equidigital number, since it uses as much as digits as its factorization.

144137809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 144137809 is about 12005.7406685302. The cubic root of 144137809 is about 524.3154300457.

It can be divided in two parts, 14413 and 7809, that added together give a palindrome (22222).

The spelling of 144137809 in words is "one hundred forty-four million, one hundred thirty-seven thousand, eight hundred nine".