8420924 has 6 divisors (see below), whose sum is σ = 14736624. Its totient is φ = 4210460.

The previous prime is 8420917. The next prime is 8420927. The reversal of 8420924 is 4290248.

It is a super-2 number, since 2×8420924² = 141823922027552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052612 + ... + 1052619.

It is an arithmetic number, because the mean of its divisors is an integer number (2456104).

Almost surely, 2^8420924 is an apocalyptic number.

It is an amenable number.

8420924 is a deficient number, since it is larger than the sum of its proper divisors (6315700).

8420924 is a wasteful number, since it uses less digits than its factorization.

8420924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105235 (or 2105233 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 8420924 is about 2901.8828370560. The cubic root of 8420924 is about 203.4479177387.

The spelling of 8420924 in words is "eight million, four hundred twenty thousand, nine hundred twenty-four".