80491000 has 32 divisors (see below), whose sum is σ = 188351280. Its totient is φ = 32196000.

The previous prime is 80490997. The next prime is 80491001. The reversal of 80491000 is 19408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80491001) by changing a digit.

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, 39246 + ... + 41245.

Almost surely, 2^80491000 is an apocalyptic number.

It is an amenable number.

80491000 is an abundant number, since it is smaller than the sum of its proper divisors (107860280).

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

80491000 is a wasteful number, since it uses less digits than its factorization.

80491000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80512 (or 80498 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 80491000 is about 8971.6776580526. The cubic root of 80491000 is about 431.7666635424.

The spelling of 80491000 in words is "eighty million, four hundred ninety-one thousand".