8421954 has 16 divisors (see below), whose sum is σ = 16934400. Its totient is φ = 2792240.

The previous prime is 8421929. The next prime is 8421961. The reversal of 8421954 is 4591248.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2529 + ... + 4820.

It is an arithmetic number, because the mean of its divisors is an integer number (1058400).

Almost surely, 2^8421954 is an apocalyptic number.

8421954 is an abundant number, since it is smaller than the sum of its proper divisors (8512446).

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

8421954 is a wasteful number, since it uses less digits than its factorization.

8421954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7545.

The product of its digits is 11520, while the sum is 33.

The square root of 8421954 is about 2902.0603026126. The cubic root of 8421954 is about 203.4562122684.

The spelling of 8421954 in words is "eight million, four hundred twenty-one thousand, nine hundred fifty-four".