4426729 has 8 divisors (see below), whose sum is σ = 4583880. Its totient is φ = 4272000.

The previous prime is 4426699. The next prime is 4426739. The reversal of 4426729 is 9276244.

It can be written as a sum of positive squares in 4 ways, for example, as 632025 + 3794704 = 795^2 + 1948^2 .

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 4426729 - 2¹³ = 4418537 is a prime.

It is a Duffinian number.

4426729 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4426694 and 4426703.

It is not an unprimeable number, because it can be changed into a prime (4426739) 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, 3607 + ... + 4675.

It is an arithmetic number, because the mean of its divisors is an integer number (572985).

Almost surely, 2^4426729 is an apocalyptic number.

It is an amenable number.

4426729 is a deficient number, since it is larger than the sum of its proper divisors (157151).

4426729 is a wasteful number, since it uses less digits than its factorization.

4426729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211.

The product of its digits is 24192, while the sum is 34.

The square root of 4426729 is about 2103.9793249935. The cubic root of 4426729 is about 164.1953971836.

The spelling of 4426729 in words is "four million, four hundred twenty-six thousand, seven hundred twenty-nine".