865794445 has 8 divisors (see below), whose sum is σ = 1100068344. Its totient is φ = 651892224.

The previous prime is 865794437. The next prime is 865794463. The reversal of 865794445 is 544497568.

It can be written as a sum of positive squares in 4 ways, for example, as 439908676 + 425885769 = 20974^2 + 20637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 865794445 - 2³ = 865794437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 865794392 and 865794401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5092824 + ... + 5092993.

It is an arithmetic number, because the mean of its divisors is an integer number (137508543).

Almost surely, 2^865794445 is an apocalyptic number.

865794445 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

865794445 is a deficient number, since it is larger than the sum of its proper divisors (234273899).

865794445 is a wasteful number, since it uses less digits than its factorization.

865794445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10185839.

The product of its digits is 4838400, while the sum is 52.

The square root of 865794445 is about 29424.3852102300. The cubic root of 865794445 is about 953.0995511184.

The spelling of 865794445 in words is "eight hundred sixty-five million, seven hundred ninety-four thousand, four hundred forty-five".