8368921 has 8 divisors (see below), whose sum is σ = 9151488. Its totient is φ = 7590000.

The previous prime is 8368901. The next prime is 8368931. The reversal of 8368921 is 1298638.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-8368921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8368901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6696 + ... + 7846.

It is an arithmetic number, because the mean of its divisors is an integer number (1143936).

Almost surely, 2^8368921 is an apocalyptic number.

It is an amenable number.

8368921 is a deficient number, since it is larger than the sum of its proper divisors (782567).

8368921 is a wasteful number, since it uses less digits than its factorization.

8368921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823.

The product of its digits is 20736, while the sum is 37.

The square root of 8368921 is about 2892.9087438079. The cubic root of 8368921 is about 203.0282585007.

The spelling of 8368921 in words is "eight million, three hundred sixty-eight thousand, nine hundred twenty-one".