8394649 has 4 divisors (see below), whose sum is σ = 8401536. Its totient is φ = 8387764.

The previous prime is 8394643. The next prime is 8394667. The reversal of 8394649 is 9464938.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 8394649 - 2¹⁹ = 7870361 is a prime.

It is a Duffinian number.

8394649 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8394643) 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, 1069 + ... + 4234.

It is an arithmetic number, because the mean of its divisors is an integer number (2100384).

Almost surely, 2^8394649 is an apocalyptic number.

It is an amenable number.

8394649 is a deficient number, since it is larger than the sum of its proper divisors (6887).

8394649 is a wasteful number, since it uses less digits than its factorization.

8394649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6886.

The product of its digits is 186624, while the sum is 43.

The square root of 8394649 is about 2897.3520669743. The cubic root of 8394649 is about 203.2360976155.

The spelling of 8394649 in words is "eight million, three hundred ninety-four thousand, six hundred forty-nine".