4877921 has 4 divisors (see below), whose sum is σ = 4884672. Its totient is φ = 4871172.

The previous prime is 4877911. The next prime is 4877941. The reversal of 4877921 is 1297784.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4877921 - 2⁶ = 4877857 is a prime.

It is a super-2 number, since 2×4877921² = 47588226564482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4877911) 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 3 ways as a sum of consecutive naturals, for example, 2141 + ... + 3786.

It is an arithmetic number, because the mean of its divisors is an integer number (1221168).

Almost surely, 2^4877921 is an apocalyptic number.

It is an amenable number.

4877921 is a deficient number, since it is larger than the sum of its proper divisors (6751).

4877921 is an equidigital number, since it uses as much as digits as its factorization.

4877921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6750.

The product of its digits is 28224, while the sum is 38.

The square root of 4877921 is about 2208.6015937692. The cubic root of 4877921 is about 169.5944311280.

The spelling of 4877921 in words is "four million, eight hundred seventy-seven thousand, nine hundred twenty-one".