144964693 has 4 divisors (see below), whose sum is σ = 145002060. Its totient is φ = 144927328.

The previous prime is 144964679. The next prime is 144964709. The reversal of 144964693 is 396469441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61826769 + 83137924 = 7863^2 + 9118^2 .

It is a cyclic number.

It is not a de Polignac number, because 144964693 - 2⁹ = 144964181 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 (144964663) 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, 12088 + ... + 20881.

It is an arithmetic number, because the mean of its divisors is an integer number (36250515).

Almost surely, 2^144964693 is an apocalyptic number.

It is an amenable number.

144964693 is a deficient number, since it is larger than the sum of its proper divisors (37367).

144964693 is an equidigital number, since it uses as much as digits as its factorization.

144964693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37366.

The product of its digits is 559872, while the sum is 46.

The square root of 144964693 is about 12040.1284461587. The cubic root of 144964693 is about 525.3161427701.

The spelling of 144964693 in words is "one hundred forty-four million, nine hundred sixty-four thousand, six hundred ninety-three".