8138966 has 16 divisors (see below), whose sum is σ = 13778640. Its totient is φ = 3571680.

The previous prime is 8138947. The next prime is 8138981. The reversal of 8138966 is 6698318.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5741 + ... + 7016.

It is an arithmetic number, because the mean of its divisors is an integer number (861165).

Almost surely, 2^8138966 is an apocalyptic number.

8138966 is a deficient number, since it is larger than the sum of its proper divisors (5639674).

8138966 is a wasteful number, since it uses less digits than its factorization.

8138966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12799.

The product of its digits is 62208, while the sum is 41.

The square root of 8138966 is about 2852.8873093762. The cubic root of 8138966 is about 201.1514085709.

It can be divided in two parts, 813 and 8966, that added together give a palindrome (9779).

The spelling of 8138966 in words is "eight million, one hundred thirty-eight thousand, nine hundred sixty-six".