4220929 has 8 divisors (see below), whose sum is σ = 4451328. Its totient is φ = 3996480.

The previous prime is 4220927. The next prime is 4220939. The reversal of 4220929 is 9290224.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4220929 - 2¹ = 4220927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4220897 and 4220906.

It is not an unprimeable number, because it can be changed into a prime (4220927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9 + ... + 2905.

It is an arithmetic number, because the mean of its divisors is an integer number (556416).

Almost surely, 2^4220929 is an apocalyptic number.

It is an amenable number.

4220929 is a deficient number, since it is larger than the sum of its proper divisors (230399).

4220929 is a wasteful number, since it uses less digits than its factorization.

4220929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 4220929 is about 2054.4899610366. The cubic root of 4220929 is about 161.6104163016.

The spelling of 4220929 in words is "four million, two hundred twenty thousand, nine hundred twenty-nine".