807999985 has 48 divisors (see below), whose sum is σ = 1125230400. Its totient is φ = 555040512.

The previous prime is 807999979. The next prime is 807999991. The reversal of 807999985 is 589999708.

It is an interprime number because it is at equal distance from previous prime (807999979) and next prime (807999991).

It is not a de Polignac number, because 807999985 - 2¹⁵ = 807967217 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 946819 + ... + 947671.

It is an arithmetic number, because the mean of its divisors is an integer number (23442300).

Almost surely, 2^807999985 is an apocalyptic number.

It is an amenable number.

807999985 is a deficient number, since it is larger than the sum of its proper divisors (317230415).

807999985 is a wasteful number, since it uses less digits than its factorization.

807999985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 14696640, while the sum is 64.

The square root of 807999985 is about 28425.3405432547. The cubic root of 807999985 is about 931.4018957971.

The spelling of 807999985 in words is "eight hundred seven million, nine hundred ninety-nine thousand, nine hundred eighty-five".