1439220442 has 32 divisors (see below), whose sum is σ = 2517899904. Its totient is φ = 609715200.

The previous prime is 1439220437. The next prime is 1439220443. The reversal of 1439220442 is 2440229341.

It is not an unprimeable number, because it can be changed into a prime (1439220443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19842 + ... + 57202.

It is an arithmetic number, because the mean of its divisors is an integer number (78684372).

Almost surely, 2^1439220442 is an apocalyptic number.

1439220442 is a deficient number, since it is larger than the sum of its proper divisors (1078679462).

1439220442 is a wasteful number, since it uses less digits than its factorization.

1439220442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37494.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1439220442 is about 37937.0589529552. The cubic root of 1439220442 is about 1129.0394222729.

Adding to 1439220442 its reverse (2440229341), we get a palindrome (3879449783).

The spelling of 1439220442 in words is "one billion, four hundred thirty-nine million, two hundred twenty thousand, four hundred forty-two".