8077889 has 8 divisors (see below), whose sum is σ = 8287272. Its totient is φ = 7870720.

The previous prime is 8077871. The next prime is 8077891. The reversal of 8077889 is 9887708.

It can be written as a sum of positive squares in 4 ways, for example, as 2356225 + 5721664 = 1535^2 + 2392^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8077889 - 2⁸ = 8077633 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8077189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8729 + ... + 9609.

It is an arithmetic number, because the mean of its divisors is an integer number (1035909).

Almost surely, 2^8077889 is an apocalyptic number.

It is an amenable number.

8077889 is a deficient number, since it is larger than the sum of its proper divisors (209383).

8077889 is a wasteful number, since it uses less digits than its factorization.

8077889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107.

The product of its (nonzero) digits is 225792, while the sum is 47.

The square root of 8077889 is about 2842.1627328498. The cubic root of 8077889 is about 200.6469798287.

The spelling of 8077889 in words is "eight million, seventy-seven thousand, eight hundred eighty-nine".