4922721 has 16 divisors (see below), whose sum is σ = 7545600. Its totient is φ = 3168144.

The previous prime is 4922719. The next prime is 4922773. The reversal of 4922721 is 1272294.

It is not a de Polignac number, because 4922721 - 2¹ = 4922719 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 4² + 9⁷ + 2⁷ + 2¹³ + 7³ + 2¹⁷ + 1 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4922711) 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 15 ways as a sum of consecutive naturals, for example, 2361 + ... + 3926.

It is an arithmetic number, because the mean of its divisors is an integer number (471600).

Almost surely, 2^4922721 is an apocalyptic number.

It is an amenable number.

4922721 is a deficient number, since it is larger than the sum of its proper divisors (2622879).

4922721 is a wasteful number, since it uses less digits than its factorization.

4922721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6325 (or 6319 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 4922721 is about 2218.7205772697. The cubic root of 4922721 is about 170.1120483924.

The spelling of 4922721 in words is "four million, nine hundred twenty-two thousand, seven hundred twenty-one".