1440497959 has 4 divisors (see below), whose sum is σ = 1445853240. Its totient is φ = 1435142680.

The previous prime is 1440497953. The next prime is 1440498001. The reversal of 1440497959 is 9597940441.

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 1440497959 - 2²¹ = 1438400807 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 (1440497953) 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, 2677237 + ... + 2677774.

It is an arithmetic number, because the mean of its divisors is an integer number (361463310).

Almost surely, 2^1440497959 is an apocalyptic number.

1440497959 is a deficient number, since it is larger than the sum of its proper divisors (5355281).

1440497959 is an equidigital number, since it uses as much as digits as its factorization.

1440497959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5355280.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The square root of 1440497959 is about 37953.8925408185. The cubic root of 1440497959 is about 1129.3733855894.

The spelling of 1440497959 in words is "one billion, four hundred forty million, four hundred ninety-seven thousand, nine hundred fifty-nine".