144669505 has 8 divisors (see below), whose sum is σ = 174105792. Its totient is φ = 115400688.

The previous prime is 144669463. The next prime is 144669521. The reversal of 144669505 is 505966441.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144669505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39957 + ... + 43426.

It is an arithmetic number, because the mean of its divisors is an integer number (21763224).

Almost surely, 2^144669505 is an apocalyptic number.

It is an amenable number.

144669505 is a deficient number, since it is larger than the sum of its proper divisors (29436287).

144669505 is an equidigital number, since it uses as much as digits as its factorization.

144669505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83735.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 144669505 is about 12027.8636922772. The cubic root of 144669505 is about 524.9593377426.

The spelling of 144669505 in words is "one hundred forty-four million, six hundred sixty-nine thousand, five hundred five".