1244321992 has 16 divisors (see below), whose sum is σ = 2382744960. Its totient is φ = 608923344.

The previous prime is 1244321983. The next prime is 1244321999. The reversal of 1244321992 is 2991234421.

It is not an unprimeable number, because it can be changed into a prime (1244321999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1654308 + ... + 1655059.

It is an arithmetic number, because the mean of its divisors is an integer number (148921560).

Almost surely, 2^1244321992 is an apocalyptic number.

It is an amenable number.

1244321992 is a deficient number, since it is larger than the sum of its proper divisors (1138422968).

1244321992 is a wasteful number, since it uses less digits than its factorization.

1244321992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3309420 (or 3309416 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 1244321992 is about 35274.9485045691. The cubic root of 1244321992 is about 1075.5838161422.

The spelling of 1244321992 in words is "one billion, two hundred forty-four million, three hundred twenty-one thousand, nine hundred ninety-two".