804678889 has 4 divisors (see below), whose sum is σ = 919633024. Its totient is φ = 689724756.

The previous prime is 804678883. The next prime is 804678893. The reversal of 804678889 is 988876408.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 804678889 - 2³ = 804678881 is a prime.

It is a super-2 number, since 2×804678889² = 1295016228804548642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (804678881) 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, 57477057 + ... + 57477070.

It is an arithmetic number, because the mean of its divisors is an integer number (229908256).

Almost surely, 2^804678889 is an apocalyptic number.

It is an amenable number.

804678889 is a deficient number, since it is larger than the sum of its proper divisors (114954135).

804678889 is a wasteful number, since it uses less digits than its factorization.

804678889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114954134.

The product of its (nonzero) digits is 6193152, while the sum is 58.

The square root of 804678889 is about 28366.8625159710. The cubic root of 804678889 is about 930.1240398009.

The spelling of 804678889 in words is "eight hundred four million, six hundred seventy-eight thousand, eight hundred eighty-nine".