800400023 has 16 divisors (see below), whose sum is σ = 892312320. Its totient is φ = 714453696.

The previous prime is 800399993. The next prime is 800400043. The reversal of 800400023 is 320004008.

It is not a de Polignac number, because 800400023 - 2²² = 796205719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 800399974 and 800400010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800400043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15611 + ... + 42947.

It is an arithmetic number, because the mean of its divisors is an integer number (55769520).

Almost surely, 2^800400023 is an apocalyptic number.

800400023 is a deficient number, since it is larger than the sum of its proper divisors (91912297).

800400023 is a wasteful number, since it uses less digits than its factorization.

800400023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27446.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 800400023 is about 28291.3418380960. The cubic root of 800400023 is about 928.4724694643.

The spelling of 800400023 in words is "eight hundred million, four hundred thousand, twenty-three".