4089729 has 8 divisors (see below), whose sum is σ = 6232000. Its totient is φ = 2336976.

The previous prime is 4089719. The next prime is 4089763. The reversal of 4089729 is 9279804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4089729 - 2⁴ = 4089713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4089719) 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, 97354 + ... + 97395.

It is an arithmetic number, because the mean of its divisors is an integer number (779000).

Almost surely, 2^4089729 is an apocalyptic number.

It is an amenable number.

4089729 is a deficient number, since it is larger than the sum of its proper divisors (2142271).

4089729 is a wasteful number, since it uses less digits than its factorization.

4089729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194759.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 4089729 is about 2022.3078400679. The cubic root of 4089729 is about 159.9183046480.

The spelling of 4089729 in words is "four million, eighty-nine thousand, seven hundred twenty-nine".