1229944442 has 32 divisors (see below), whose sum is σ = 1980417600. Its totient is φ = 571183488.

The previous prime is 1229944421. The next prime is 1229944451. The reversal of 1229944442 is 2444499221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1229944442.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495308 + ... + 497784.

It is an arithmetic number, because the mean of its divisors is an integer number (61888050).

Almost surely, 2^1229944442 is an apocalyptic number.

1229944442 is a deficient number, since it is larger than the sum of its proper divisors (750473158).

1229944442 is a wasteful number, since it uses less digits than its factorization.

1229944442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750.

The product of its digits is 165888, while the sum is 41.

The square root of 1229944442 is about 35070.5637536667. The cubic root of 1229944442 is about 1071.4251374332.

The spelling of 1229944442 in words is "one billion, two hundred twenty-nine million, nine hundred forty-four thousand, four hundred forty-two".