8420934 has 8 divisors (see below), whose sum is σ = 16841880. Its totient is φ = 2806976.

The previous prime is 8420927. The next prime is 8420939. The reversal of 8420934 is 4390248.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

8420934 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420939) 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, 701739 + ... + 701750.

It is an arithmetic number, because the mean of its divisors is an integer number (2105235).

Almost surely, 2^8420934 is an apocalyptic number.

8420934 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8420934 is a wasteful number, since it uses less digits than its factorization.

8420934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403494.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 8420934 is about 2901.8845600747. The cubic root of 8420934 is about 203.4479982714.

The spelling of 8420934 in words is "eight million, four hundred twenty thousand, nine hundred thirty-four".