1440220494 has 16 divisors (see below), whose sum is σ = 2881664640. Its totient is φ = 479869560.

The previous prime is 1440220493. The next prime is 1440220499. The reversal of 1440220494 is 4940220441.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440220493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35314 + ... + 64245.

It is an arithmetic number, because the mean of its divisors is an integer number (180104040).

Almost surely, 2^1440220494 is an apocalyptic number.

1440220494 is an abundant number, since it is smaller than the sum of its proper divisors (1441444146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1440220494 is a wasteful number, since it uses less digits than its factorization.

1440220494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101975.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 1440220494 is about 37950.2370743583. The cubic root of 1440220494 is about 1129.3008686041.

The spelling of 1440220494 in words is "one billion, four hundred forty million, two hundred twenty thousand, four hundred ninety-four".