4084729 has 4 divisors (see below), whose sum is σ = 4456080. Its totient is φ = 3713380.

The previous prime is 4084721. The next prime is 4084739. The reversal of 4084729 is 9274804.

It is a happy number.

4084729 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4084729 - 2³ = 4084721 is a prime.

It is a super-2 number, since 2×4084729² = 33370022006882, which contains 22 as substring.

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 = 4084694 and 4084703.

It is not an unprimeable number, because it can be changed into a prime (4084721) 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, 185659 + ... + 185680.

It is an arithmetic number, because the mean of its divisors is an integer number (1114020).

Almost surely, 2^4084729 is an apocalyptic number.

It is an amenable number.

4084729 is a deficient number, since it is larger than the sum of its proper divisors (371351).

4084729 is a wasteful number, since it uses less digits than its factorization.

4084729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371350.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 4084729 is about 2021.0712505995. The cubic root of 4084729 is about 159.8531073697.

The spelling of 4084729 in words is "four million, eighty-four thousand, seven hundred twenty-nine".