144028809 has 12 divisors (see below), whose sum is σ = 208915200. Its totient is φ = 95616024.

The previous prime is 144028793. The next prime is 144028813. The reversal of 144028809 is 908820441.

It is not a de Polignac number, because 144028809 - 2⁴ = 144028793 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144028849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31329 + ... + 35630.

It is an arithmetic number, because the mean of its divisors is an integer number (17409600).

Almost surely, 2^144028809 is an apocalyptic number.

It is an amenable number.

144028809 is a deficient number, since it is larger than the sum of its proper divisors (64886391).

144028809 is a wasteful number, since it uses less digits than its factorization.

144028809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67204 (or 67201 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 144028809 is about 12001.2003149685. The cubic root of 144028809 is about 524.1832306494.

The spelling of 144028809 in words is "one hundred forty-four million, twenty-eight thousand, eight hundred nine".