8421466 has 8 divisors (see below), whose sum is σ = 12729024. Its totient is φ = 4178460.

The previous prime is 8421463. The next prime is 8421487. The reversal of 8421466 is 6641248.

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

It is not an unprimeable number, because it can be changed into a prime (8421463) 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, 15810 + ... + 16333.

It is an arithmetic number, because the mean of its divisors is an integer number (1591128).

Almost surely, 2^8421466 is an apocalyptic number.

8421466 is a deficient number, since it is larger than the sum of its proper divisors (4307558).

8421466 is a wasteful number, since it uses less digits than its factorization.

8421466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32276.

The product of its digits is 9216, while the sum is 31.

The square root of 8421466 is about 2901.9762231969. The cubic root of 8421466 is about 203.4522825173.

The spelling of 8421466 in words is "eight million, four hundred twenty-one thousand, four hundred sixty-six".