144263009 has 4 divisors (see below), whose sum is σ = 157377840. Its totient is φ = 131148180.

The previous prime is 144262967. The next prime is 144263011. The reversal of 144263009 is 900362441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 900362441 = 11 ⋅81851131.

It is a cyclic number.

It is not a de Polignac number, because 144263009 - 2⁸ = 144262753 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (144263039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6557399 + ... + 6557420.

It is an arithmetic number, because the mean of its divisors is an integer number (39344460).

Almost surely, 2^144263009 is an apocalyptic number.

It is an amenable number.

144263009 is a deficient number, since it is larger than the sum of its proper divisors (13114831).

144263009 is a wasteful number, since it uses less digits than its factorization.

144263009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13114830.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 144263009 is about 12010.9537090108. The cubic root of 144263009 is about 524.4671952094.

The spelling of 144263009 in words is "one hundred forty-four million, two hundred sixty-three thousand, nine".