1089397772 has 12 divisors (see below), whose sum is σ = 1947009120. Its totient is φ = 533109456.

The previous prime is 1089397769. The next prime is 1089397787. The reversal of 1089397772 is 2777939801.

It is an unprimeable number.

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, 2897147 + ... + 2897522.

It is an arithmetic number, because the mean of its divisors is an integer number (162250760).

Almost surely, 2^1089397772 is an apocalyptic number.

It is an amenable number.

1089397772 is a deficient number, since it is larger than the sum of its proper divisors (857611348).

1089397772 is a wasteful number, since it uses less digits than its factorization.

1089397772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5794720 (or 5794718 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 53.

The square root of 1089397772 is about 33006.0262982383. The cubic root of 1089397772 is about 1028.9528969729.

The spelling of 1089397772 in words is "one billion, eighty-nine million, three hundred ninety-seven thousand, seven hundred seventy-two".