1085399552 has 20 divisors (see below), whose sum is σ = 2168680206. Its totient is φ = 542699520.

The previous prime is 1085399521. The next prime is 1085399563. The reversal of 1085399552 is 2559935801.

It can be written as a sum of positive squares in only one way, i.e., 1085307136 + 92416 = 32944^2 + 304^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1085399497 and 1085399506.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059449 + ... + 1060472.

Almost surely, 2^1085399552 is an apocalyptic number.

It is an amenable number.

1085399552 is a deficient number, since it is larger than the sum of its proper divisors (1083280654).

1085399552 is an frugal number, since it uses more digits than its factorization.

1085399552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2119939 (or 2119923 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 47.

The square root of 1085399552 is about 32945.4025927746. The cubic root of 1085399552 is about 1027.6925604893.

The spelling of 1085399552 in words is "one billion, eighty-five million, three hundred ninety-nine thousand, five hundred fifty-two".