4052729 has 4 divisors (see below), whose sum is σ = 4090020. Its totient is φ = 4015440.

The previous prime is 4052717. The next prime is 4052743. The reversal of 4052729 is 9272504.

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 2036329 + 2016400 = 1427^2 + 1420^2 .

It is a cyclic number.

It is not a de Polignac number, because 4052729 - 2⁸ = 4052473 is a prime.

It is a super-2 number, since 2×4052729² = 32849224694882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4052029) 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, 18482 + ... + 18699.

It is an arithmetic number, because the mean of its divisors is an integer number (1022505).

Almost surely, 2^4052729 is an apocalyptic number.

It is an amenable number.

4052729 is a deficient number, since it is larger than the sum of its proper divisors (37291).

4052729 is a wasteful number, since it uses less digits than its factorization.

4052729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37290.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 4052729 is about 2013.1390910715. The cubic root of 4052729 is about 159.4345797492.

The spelling of 4052729 in words is "four million, fifty-two thousand, seven hundred twenty-nine".