4272229 has 4 divisors (see below), whose sum is σ = 4600876. Its totient is φ = 3943584.

The previous prime is 4272223. The next prime is 4272239. The reversal of 4272229 is 9222724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2169729 + 2102500 = 1473^2 + 1450^2 .

It is a cyclic number.

It is not a de Polignac number, because 4272229 - 2³ = 4272221 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4272197 and 4272206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4272221) 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, 164304 + ... + 164329.

It is an arithmetic number, because the mean of its divisors is an integer number (1150219).

Almost surely, 2^4272229 is an apocalyptic number.

It is an amenable number.

4272229 is a deficient number, since it is larger than the sum of its proper divisors (328647).

4272229 is a wasteful number, since it uses less digits than its factorization.

4272229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328646.

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

The square root of 4272229 is about 2066.9371059614. The cubic root of 4272229 is about 162.2625043485.

The spelling of 4272229 in words is "four million, two hundred seventy-two thousand, two hundred twenty-nine".