8067989 has 6 divisors (see below), whose sum is σ = 8515350. Its totient is φ = 7643016.

The previous prime is 8067959. The next prime is 8067991. The reversal of 8067989 is 9897608.

8067989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5640625 + 2427364 = 2375^2 + 1558^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8067989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8067949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10814 + ... + 11535.

It is an arithmetic number, because the mean of its divisors is an integer number (1419225).

Almost surely, 2^8067989 is an apocalyptic number.

It is an amenable number.

8067989 is a deficient number, since it is larger than the sum of its proper divisors (447361).

8067989 is a wasteful number, since it uses less digits than its factorization.

8067989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22387 (or 22368 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 8067989 is about 2840.4205674512. The cubic root of 8067989 is about 200.5649774993.

The spelling of 8067989 in words is "eight million, sixty-seven thousand, nine hundred eighty-nine".