1099660444 has 6 divisors (see below), whose sum is σ = 1924405784. Its totient is φ = 549830220.

The previous prime is 1099660423. The next prime is 1099660469. The reversal of 1099660444 is 4440669901.

It is a self number, because there is not a number n which added to its sum of digits gives 1099660444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137457552 + ... + 137457559.

Almost surely, 2^1099660444 is an apocalyptic number.

It is an amenable number.

1099660444 is a deficient number, since it is larger than the sum of its proper divisors (824745340).

1099660444 is a wasteful number, since it uses less digits than its factorization.

1099660444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274915115 (or 274915113 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 1099660444 is about 33161.1285091446. The cubic root of 1099660444 is about 1032.1738872807.

The spelling of 1099660444 in words is "one billion, ninety-nine million, six hundred sixty thousand, four hundred forty-four".