8423394534 has 24 divisors (see below), whose sum is σ = 18263322792. Its totient is φ = 2805854400.

The previous prime is 8423394517. The next prime is 8423394601. The reversal of 8423394534 is 4354933248.

8423394534 is a `hidden beast` number, since 8 + 4 + 23 + 3 + 94 + 534 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 8423394534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135139 + ... + 187374.

It is an arithmetic number, because the mean of its divisors is an integer number (760971783).

Almost surely, 2^8423394534 is an apocalyptic number.

8423394534 is an abundant number, since it is smaller than the sum of its proper divisors (9839928258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8423394534 is a wasteful number, since it uses less digits than its factorization.

8423394534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323972 (or 323969 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 45.

The square root of 8423394534 is about 91779.0528061823. The cubic root of 8423394534 is about 2034.6781167007.

The spelling of 8423394534 in words is "eight billion, four hundred twenty-three million, three hundred ninety-four thousand, five hundred thirty-four".