144561959 has 4 divisors (see below), whose sum is σ = 149225280. Its totient is φ = 139898640.

The previous prime is 144561953. The next prime is 144561961. The reversal of 144561959 is 959165441.

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

It is a cyclic number.

It is not a de Polignac number, because 144561959 - 2⁴ = 144561943 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 (144561953) 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, 2331614 + ... + 2331675.

It is an arithmetic number, because the mean of its divisors is an integer number (37306320).

Almost surely, 2^144561959 is an apocalyptic number.

144561959 is a deficient number, since it is larger than the sum of its proper divisors (4663321).

144561959 is an equidigital number, since it uses as much as digits as its factorization.

144561959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4663320.

The product of its digits is 194400, while the sum is 44.

The square root of 144561959 is about 12023.3921586215. The cubic root of 144561959 is about 524.8292221557.

The spelling of 144561959 in words is "one hundred forty-four million, five hundred sixty-one thousand, nine hundred fifty-nine".