1199791044 has 81 divisors (see below), whose sum is σ = 3183080719. Its totient is φ = 381018000.

The previous prime is 1199791037. The next prime is 1199791049. The reversal of 1199791044 is 4401979911.

The square root of 1199791044 is 34638.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1199791049) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4779919 + ... + 4780169.

Almost surely, 2^1199791044 is an apocalyptic number.

1199791044 is the 34638-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1199791044

1199791044 is an abundant number, since it is smaller than the sum of its proper divisors (1983289675).

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

1199791044 is a wasteful number, since it uses less digits than its factorization.

1199791044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The cubic root of 1199791044 is about 1062.5968853566.

It can be divided in two parts, 11997 and 91044, that added together give a square (103041 = 321²).

The spelling of 1199791044 in words is "one billion, one hundred ninety-nine million, seven hundred ninety-one thousand, forty-four".