8521834 has 4 divisors (see below), whose sum is σ = 12782754. Its totient is φ = 4260916.

The previous prime is 8521831. The next prime is 8521841. The reversal of 8521834 is 4381258.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7425625 + 1096209 = 2725^2 + 1047^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 8521796 and 8521805.

It is not an unprimeable number, because it can be changed into a prime (8521831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2130457 + ... + 2130460.

Almost surely, 2^8521834 is an apocalyptic number.

8521834 is a deficient number, since it is larger than the sum of its proper divisors (4260920).

8521834 is a wasteful number, since it uses less digits than its factorization.

8521834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4260919.

The product of its digits is 7680, while the sum is 31.

The square root of 8521834 is about 2919.2180459842. The cubic root of 8521834 is about 204.2573485459.

The spelling of 8521834 in words is "eight million, five hundred twenty-one thousand, eight hundred thirty-four".