4055729 has 4 divisors (see below), whose sum is σ = 4067700. Its totient is φ = 4043760.

The previous prime is 4055687. The next prime is 4055747. The reversal of 4055729 is 9275504.

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 1495729 + 2560000 = 1223^2 + 1600^2 .

It is a cyclic number.

It is not a de Polignac number, because 4055729 - 2¹² = 4051633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4055695 and 4055704.

It is not an unprimeable number, because it can be changed into a prime (4055329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5462 + ... + 6159.

It is an arithmetic number, because the mean of its divisors is an integer number (1016925).

Almost surely, 2^4055729 is an apocalyptic number.

It is an amenable number.

4055729 is a deficient number, since it is larger than the sum of its proper divisors (11971).

4055729 is a wasteful number, since it uses less digits than its factorization.

4055729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11970.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 4055729 is about 2013.8840582318. The cubic root of 4055729 is about 159.4739101006.

The spelling of 4055729 in words is "four million, fifty-five thousand, seven hundred twenty-nine".