80840487 has 32 divisors (see below), whose sum is σ = 137249280. Its totient is φ = 41166720.

The previous prime is 80840483. The next prime is 80840489. The reversal of 80840487 is 78404808.

It is not a de Polignac number, because 80840487 - 2² = 80840483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80840483) 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 31 ways as a sum of consecutive naturals, for example, 2812 + ... + 13022.

It is an arithmetic number, because the mean of its divisors is an integer number (4289040).

Almost surely, 2^80840487 is an apocalyptic number.

80840487 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

80840487 is a deficient number, since it is larger than the sum of its proper divisors (56408793).

80840487 is a wasteful number, since it uses less digits than its factorization.

80840487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10263.

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 80840487 is about 8991.1337994716. The cubic root of 80840487 is about 432.3906627733.

The spelling of 80840487 in words is "eighty million, eight hundred forty thousand, four hundred eighty-seven".