8394621 has 4 divisors (see below), whose sum is σ = 11192832. Its totient is φ = 5596412.

The previous prime is 8394613. The next prime is 8394643. The reversal of 8394621 is 1264938.

8394621 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8394621 - 2³ = 8394613 is a prime.

It is a d-powerful number, because it can be written as 8³ + 3³ + 9² + 4⁶ + 6⁴ + 2²³ + 1 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8394691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1399101 + ... + 1399106.

It is an arithmetic number, because the mean of its divisors is an integer number (2798208).

Almost surely, 2^8394621 is an apocalyptic number.

It is an amenable number.

8394621 is a deficient number, since it is larger than the sum of its proper divisors (2798211).

8394621 is a wasteful number, since it uses less digits than its factorization.

8394621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2798210.

The product of its digits is 10368, while the sum is 33.

The square root of 8394621 is about 2897.3472349720. The cubic root of 8394621 is about 203.2358716534.

It can be divided in two parts, 839 and 4621, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 8394621 in words is "eight million, three hundred ninety-four thousand, six hundred twenty-one".