4647421 has 4 divisors (see below), whose sum is σ = 4651744. Its totient is φ = 4643100.

The previous prime is 4647413. The next prime is 4647431. The reversal of 4647421 is 1247464.

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 4647421 - 2³ = 4647413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4647421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4647431) 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, 856 + ... + 3166.

It is an arithmetic number, because the mean of its divisors is an integer number (1162936).

Almost surely, 2^4647421 is an apocalyptic number.

It is an amenable number.

4647421 is a deficient number, since it is larger than the sum of its proper divisors (4323).

4647421 is a wasteful number, since it uses less digits than its factorization.

4647421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4322.

The product of its digits is 5376, while the sum is 28.

The square root of 4647421 is about 2155.7877910407. The cubic root of 4647421 is about 166.8798902091.

The spelling of 4647421 in words is "four million, six hundred forty-seven thousand, four hundred twenty-one".