1097729444 has 24 divisors (see below), whose sum is σ = 2196286848. Its totient is φ = 470278080.

The previous prime is 1097729443. The next prime is 1097729447. The reversal of 1097729444 is 4449277901.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1097729443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91304 + ... + 102624.

It is an arithmetic number, because the mean of its divisors is an integer number (91511952).

Almost surely, 2^1097729444 is an apocalyptic number.

1097729444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1097729444 is an abundant number, since it is smaller than the sum of its proper divisors (1098557404).

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

1097729444 is a wasteful number, since it uses less digits than its factorization.

1097729444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14795 (or 14793 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 1097729444 is about 33132.0003018230. Note that the first 3 decimals coincide. The cubic root of 1097729444 is about 1031.5693686863.

The spelling of 1097729444 in words is "one billion, ninety-seven million, seven hundred twenty-nine thousand, four hundred forty-four".