807999980 has 24 divisors (see below), whose sum is σ = 1713278112. Its totient is φ = 320061312.

The previous prime is 807999979. The next prime is 807999991. The reversal of 807999980 is 89999708.

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 7 ways as a sum of consecutive naturals, for example, 194057 + ... + 198176.

It is an arithmetic number, because the mean of its divisors is an integer number (71386588).

Almost surely, 2^807999980 is an apocalyptic number.

It is an amenable number.

807999980 is an abundant number, since it is smaller than the sum of its proper divisors (905278132).

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

807999980 is a wasteful number, since it uses less digits than its factorization.

807999980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392345 (or 392343 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 59.

The square root of 807999980 is about 28425.3404553050. The cubic root of 807999980 is about 931.4018938759.

The spelling of 807999980 in words is "eight hundred seven million, nine hundred ninety-nine thousand, nine hundred eighty".