4956421 has 4 divisors (see below), whose sum is σ = 4961152. Its totient is φ = 4951692.

The previous prime is 4956389. The next prime is 4956437. The reversal of 4956421 is 1246594.

4956421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4956421 - 2⁵ = 4956389 is a prime.

It is a super-2 number, since 2×4956421² = 49132218258482, which contains 22 as substring.

It is a Duffinian number.

4956421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4956451) 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, 15 + ... + 3148.

It is an arithmetic number, because the mean of its divisors is an integer number (1240288).

Almost surely, 2^4956421 is an apocalyptic number.

It is an amenable number.

4956421 is a deficient number, since it is larger than the sum of its proper divisors (4731).

4956421 is a wasteful number, since it uses less digits than its factorization.

4956421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4730.

The product of its digits is 8640, while the sum is 31.

The square root of 4956421 is about 2226.3020909122. The cubic root of 4956421 is about 170.4993507083.

The spelling of 4956421 in words is "four million, nine hundred fifty-six thousand, four hundred twenty-one".