4856421 has 4 divisors (see below), whose sum is σ = 6475232. Its totient is φ = 3237612.

The previous prime is 4856417. The next prime is 4856447. The reversal of 4856421 is 1246584.

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 not a de Polignac number, because 4856421 - 2² = 4856417 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4856461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809401 + ... + 809406.

It is an arithmetic number, because the mean of its divisors is an integer number (1618808).

Almost surely, 2^4856421 is an apocalyptic number.

It is an amenable number.

4856421 is a deficient number, since it is larger than the sum of its proper divisors (1618811).

4856421 is a wasteful number, since it uses less digits than its factorization.

4856421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618810.

The product of its digits is 7680, while the sum is 30.

The square root of 4856421 is about 2203.7288853214. The cubic root of 4856421 is about 169.3448951365.

The spelling of 4856421 in words is "four million, eight hundred fifty-six thousand, four hundred twenty-one".