8013889 has 12 divisors (see below), whose sum is σ = 8950396. Its totient is φ = 7132608.

The previous prime is 8013883. The next prime is 8013893. The reversal of 8013889 is 9883108.

It can be written as a sum of positive squares in 6 ways, for example, as 173889 + 7840000 = 417^2 + 2800^2 .

It is not a de Polignac number, because 8013889 - 2⁵ = 8013857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8013883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10567 + ... + 11299.

Almost surely, 2^8013889 is an apocalyptic number.

It is an amenable number.

8013889 is a deficient number, since it is larger than the sum of its proper divisors (936507).

8013889 is a wasteful number, since it uses less digits than its factorization.

8013889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 8013889 is about 2830.8813115353. The cubic root of 8013889 is about 200.1156747505.

The spelling of 8013889 in words is "eight million, thirteen thousand, eight hundred eighty-nine".