865997448 has 16 divisors (see below), whose sum is σ = 2164993680. Its totient is φ = 288665808.

The previous prime is 865997423. The next prime is 865997471. The reversal of 865997448 is 844799568.

It is a junction number, because it is equal to n+sod(n) for n = 865997391 and 865997400.

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, 18041590 + ... + 18041637.

It is an arithmetic number, because the mean of its divisors is an integer number (135312105).

Almost surely, 2^865997448 is an apocalyptic number.

It is an amenable number.

865997448 is an abundant number, since it is smaller than the sum of its proper divisors (1298996232).

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

865997448 is a wasteful number, since it uses less digits than its factorization.

865997448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36083236 (or 36083232 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 60.

The square root of 865997448 is about 29427.8345788473. The cubic root of 865997448 is about 953.1740364459.

The spelling of 865997448 in words is "eight hundred sixty-five million, nine hundred ninety-seven thousand, four hundred forty-eight".