4797821 has 8 divisors (see below), whose sum is σ = 5576640. Its totient is φ = 4042368.

The previous prime is 4797799. The next prime is 4797851. The reversal of 4797821 is 1287974.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4797821 is a prime.

It is a super-3 number, since 3×4797821³ (a number of 21 digits) contains 333 as substring.

It is an Ulam 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 (4797851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5396 + ... + 6221.

It is an arithmetic number, because the mean of its divisors is an integer number (697080).

Almost surely, 2^4797821 is an apocalyptic number.

It is an amenable number.

4797821 is a deficient number, since it is larger than the sum of its proper divisors (778819).

4797821 is a wasteful number, since it uses less digits than its factorization.

4797821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11683.

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

The square root of 4797821 is about 2190.3928871324. The cubic root of 4797821 is about 168.6610036444.

The spelling of 4797821 in words is "four million, seven hundred ninety-seven thousand, eight hundred twenty-one".