4216729 has 6 divisors (see below), whose sum is σ = 4635050. Its totient is φ = 3833280.

The previous prime is 4216721. The next prime is 4216741. The reversal of 4216729 is 9276124.

It can be written as a sum of positive squares in only one way, i.e., 2474329 + 1742400 = 1573^2 + 1320^2 .

It is not a de Polignac number, because 4216729 - 2³ = 4216721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4216729.

It is not an unprimeable number, because it can be changed into a prime (4216721) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17304 + ... + 17545.

Almost surely, 2^4216729 is an apocalyptic number.

It is an amenable number.

4216729 is a deficient number, since it is larger than the sum of its proper divisors (418321).

4216729 is a wasteful number, since it uses less digits than its factorization.

4216729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34871 (or 34860 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 4216729 is about 2053.4675551369. The cubic root of 4216729 is about 161.5567954829.

The spelling of 4216729 in words is "four million, two hundred sixteen thousand, seven hundred twenty-nine".