8420973 has 8 divisors (see below), whose sum is σ = 12248736. Its totient is φ = 5103600.

The previous prime is 8420969. The next prime is 8420977. The reversal of 8420973 is 3790248.

8420973 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8420969) and next prime (8420977).

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

It is not a de Polignac number, because 8420973 - 2² = 8420969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 255181 = 8420973 / (8 + 4 + 2 + 0 + 9 + 7 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127558 + ... + 127623.

It is an arithmetic number, because the mean of its divisors is an integer number (1531092).

Almost surely, 2^8420973 is an apocalyptic number.

It is an amenable number.

8420973 is a deficient number, since it is larger than the sum of its proper divisors (3827763).

8420973 is a wasteful number, since it uses less digits than its factorization.

8420973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255195.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 8420973 is about 2901.8912798380. The cubic root of 8420973 is about 203.4483123481.

Adding to 8420973 its reverse (3790248), we get a palindrome (12211221).

The spelling of 8420973 in words is "eight million, four hundred twenty thousand, nine hundred seventy-three".