8354921 has 4 divisors (see below), whose sum is σ = 8360772. Its totient is φ = 8349072.

The previous prime is 8354897. The next prime is 8354947. The reversal of 8354921 is 1294538.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6817321 + 1537600 = 2611^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 8354921 - 2¹⁴ = 8338537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8354971) 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, 791 + ... + 4163.

It is an arithmetic number, because the mean of its divisors is an integer number (2090193).

Almost surely, 2^8354921 is an apocalyptic number.

It is an amenable number.

8354921 is a deficient number, since it is larger than the sum of its proper divisors (5851).

8354921 is a wasteful number, since it uses less digits than its factorization.

8354921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5850.

The product of its digits is 8640, while the sum is 32.

The square root of 8354921 is about 2890.4880210788. The cubic root of 8354921 is about 202.9149829635.

The spelling of 8354921 in words is "eight million, three hundred fifty-four thousand, nine hundred twenty-one".