8121694 has 16 divisors (see below), whose sum is σ = 14220288. Its totient is φ = 3406392.

The previous prime is 8121689. The next prime is 8121697. The reversal of 8121694 is 4961218.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8121697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5514 + ... + 6829.

It is an arithmetic number, because the mean of its divisors is an integer number (888768).

Almost surely, 2^8121694 is an apocalyptic number.

8121694 is a deficient number, since it is larger than the sum of its proper divisors (6098594).

8121694 is a wasteful number, since it uses less digits than its factorization.

8121694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12399.

The product of its digits is 3456, while the sum is 31.

The square root of 8121694 is about 2849.8585929832. The cubic root of 8121694 is about 201.0090175240.

The spelling of 8121694 in words is "eight million, one hundred twenty-one thousand, six hundred ninety-four".