80801998 has 16 divisors (see below), whose sum is σ = 124041456. Its totient is φ = 39461760.

The previous prime is 80801989. The next prime is 80802017. The reversal of 80801998 is 89910808.

It is a congruent number.

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, 23965 + ... + 27127.

It is an arithmetic number, because the mean of its divisors is an integer number (7752591).

Almost surely, 2^80801998 is an apocalyptic number.

80801998 is a deficient number, since it is larger than the sum of its proper divisors (43239458).

80801998 is a wasteful number, since it uses less digits than its factorization.

80801998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3459.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 80801998 is about 8988.9931583020. The cubic root of 80801998 is about 432.3220299767.

The spelling of 80801998 in words is "eighty million, eight hundred one thousand, nine hundred ninety-eight".