8420964417 has 32 divisors (see below), whose sum is σ = 12792514560. Its totient is φ = 5472956160.

The previous prime is 8420964397. The next prime is 8420964451. The reversal of 8420964417 is 7144690248.

It is not a de Polignac number, because 8420964417 - 2¹¹ = 8420962369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8420964317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163488 + ... + 208734.

It is an arithmetic number, because the mean of its divisors is an integer number (399766080).

Almost surely, 2^8420964417 is an apocalyptic number.

It is an amenable number.

8420964417 is a deficient number, since it is larger than the sum of its proper divisors (4371550143).

8420964417 is a wasteful number, since it uses less digits than its factorization.

8420964417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45430 (or 45424 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 8420964417 is about 91765.8128989222. The cubic root of 8420964417 is about 2034.4824322717.

The spelling of 8420964417 in words is "eight billion, four hundred twenty million, nine hundred sixty-four thousand, four hundred seventeen".