800545979 has 4 divisors (see below), whose sum is σ = 805847760. Its totient is φ = 795244200.

The previous prime is 800545969. The next prime is 800546017. The reversal of 800545979 is 979545008.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 800545979 - 2²⁴ = 783768763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (800545939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2650664 + ... + 2650965.

It is an arithmetic number, because the mean of its divisors is an integer number (201461940).

Almost surely, 2^800545979 is an apocalyptic number.

800545979 is a deficient number, since it is larger than the sum of its proper divisors (5301781).

800545979 is a wasteful number, since it uses less digits than its factorization.

800545979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5301780.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 800545979 is about 28293.9212376086. The cubic root of 800545979 is about 928.5289028674.

The spelling of 800545979 in words is "eight hundred million, five hundred forty-five thousand, nine hundred seventy-nine".