8121976 has 16 divisors (see below), whose sum is σ = 15553440. Its totient is φ = 3974400.

The previous prime is 8121973. The next prime is 8121983. The reversal of 8121976 is 6791218.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8121973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10425 + ... + 11176.

It is an arithmetic number, because the mean of its divisors is an integer number (972090).

Almost surely, 2^8121976 is an apocalyptic number.

It is an amenable number.

8121976 is a deficient number, since it is larger than the sum of its proper divisors (7431464).

8121976 is a wasteful number, since it uses less digits than its factorization.

8121976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21654 (or 21650 counting only the distinct ones).

The product of its digits is 6048, while the sum is 34.

The square root of 8121976 is about 2849.9080686927. The cubic root of 8121976 is about 201.0113439634.

The spelling of 8121976 in words is "eight million, one hundred twenty-one thousand, nine hundred seventy-six".