144865793 has 4 divisors (see below), whose sum is σ = 146611248. Its totient is φ = 143120340.

The previous prime is 144865781. The next prime is 144865807. The reversal of 144865793 is 397568441.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144865793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144865493) 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, 872603 + ... + 872768.

It is an arithmetic number, because the mean of its divisors is an integer number (36652812).

Almost surely, 2^144865793 is an apocalyptic number.

It is an amenable number.

144865793 is a deficient number, since it is larger than the sum of its proper divisors (1745455).

144865793 is an equidigital number, since it uses as much as digits as its factorization.

144865793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745454.

The product of its digits is 725760, while the sum is 47.

The square root of 144865793 is about 12036.0206463764. The cubic root of 144865793 is about 525.1966525577.

The spelling of 144865793 in words is "one hundred forty-four million, eight hundred sixty-five thousand, seven hundred ninety-three".