807844 has 6 divisors (see below), whose sum is σ = 1413734. Its totient is φ = 403920.

The previous prime is 807817. The next prime is 807869. The reversal of 807844 is 448708.

It can be written as a sum of positive squares in only one way, i.e., 518400 + 289444 = 720^2 + 538^2 .

It is a super-2 number, since 2×807844² = 1305223856672, which contains 22 as substring.

It is an unprimeable number.

807844 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100977 + ... + 100984.

2⁸⁰⁷⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

807844 is a deficient number, since it is larger than the sum of its proper divisors (605890).

807844 is a wasteful number, since it uses less digits than its factorization.

807844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201965 (or 201963 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 807844 is about 898.8014241199. The cubic root of 807844 is about 93.1341955996.

The spelling of 807844 in words is "eight hundred seven thousand, eight hundred forty-four".