144564493 has 4 divisors (see below), whose sum is σ = 146722240. Its totient is φ = 142406748.

The previous prime is 144564487. The next prime is 144564523. The reversal of 144564493 is 394465441.

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 not a de Polignac number, because 144564493 - 2⁹ = 144563981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144564473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078773 + ... + 1078906.

It is an arithmetic number, because the mean of its divisors is an integer number (36680560).

Almost surely, 2^144564493 is an apocalyptic number.

It is an amenable number.

144564493 is a deficient number, since it is larger than the sum of its proper divisors (2157747).

144564493 is an equidigital number, since it uses as much as digits as its factorization.

144564493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157746.

The product of its digits is 207360, while the sum is 40.

The square root of 144564493 is about 12023.4975360749. The cubic root of 144564493 is about 524.8322886828.

The spelling of 144564493 in words is "one hundred forty-four million, five hundred sixty-four thousand, four hundred ninety-three".