4222729 has 8 divisors (see below), whose sum is σ = 4938560. Its totient is φ = 3535056.

The previous prime is 4222723. The next prime is 4222739. The reversal of 4222729 is 9272224.

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

It is not a de Polignac number, because 4222729 - 2³ = 4222721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4222697 and 4222706.

It is not an unprimeable number, because it can be changed into a prime (4222721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6714 + ... + 7315.

It is an arithmetic number, because the mean of its divisors is an integer number (617320).

Almost surely, 2^4222729 is an apocalyptic number.

It is an amenable number.

4222729 is a deficient number, since it is larger than the sum of its proper divisors (715831).

4222729 is a wasteful number, since it uses less digits than its factorization.

4222729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14079.

The product of its digits is 4032, while the sum is 28.

The square root of 4222729 is about 2054.9279792732. The cubic root of 4222729 is about 161.6333857639.

The spelling of 4222729 in words is "four million, two hundred twenty-two thousand, seven hundred twenty-nine".