4812921 has 24 divisors (see below), whose sum is σ = 7469280. Its totient is φ = 2975616.

The previous prime is 4812889. The next prime is 4812931. The reversal of 4812921 is 1292184.

It is not a de Polignac number, because 4812921 - 2⁵ = 4812889 is a prime.

It is a Curzon number.

4812921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4812931) 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 in 23 ways as a sum of consecutive naturals, for example, 12510 + ... + 12888.

It is an arithmetic number, because the mean of its divisors is an integer number (311220).

Almost surely, 2^4812921 is an apocalyptic number.

It is an amenable number.

4812921 is a deficient number, since it is larger than the sum of its proper divisors (2656359).

4812921 is a wasteful number, since it uses less digits than its factorization.

4812921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 482 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 4812921 is about 2193.8370495550. The cubic root of 4812921 is about 168.8377584685.

The spelling of 4812921 in words is "four million, eight hundred twelve thousand, nine hundred twenty-one".