1440440234 has 16 divisors (see below), whose sum is σ = 2260919040. Its totient is φ = 687437280.

The previous prime is 1440440233. The next prime is 1440440269. The reversal of 1440440234 is 4320440441.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1440440233) 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, 154604 + ... + 163655.

It is an arithmetic number, because the mean of its divisors is an integer number (141307440).

Almost surely, 2^1440440234 is an apocalyptic number.

1440440234 is a deficient number, since it is larger than the sum of its proper divisors (820478806).

1440440234 is a wasteful number, since it uses less digits than its factorization.

1440440234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318365.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 1440440234 is about 37953.1320710162. The cubic root of 1440440234 is about 1129.3582996142.

Adding to 1440440234 its reverse (4320440441), we get a palindrome (5760880675).

The spelling of 1440440234 in words is "one billion, four hundred forty million, four hundred forty thousand, two hundred thirty-four".