4091329 has 4 divisors (see below), whose sum is σ = 4463280. Its totient is φ = 3719380.

The previous prime is 4091323. The next prime is 4091357. The reversal of 4091329 is 9231904.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 4091329 - 2¹³ = 4083137 is a prime.

It is a Duffinian number.

4091329 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4091297 and 4091306.

It is not an unprimeable number, because it can be changed into a prime (4091323) 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, 185959 + ... + 185980.

It is an arithmetic number, because the mean of its divisors is an integer number (1115820).

Almost surely, 2^4091329 is an apocalyptic number.

It is an amenable number.

4091329 is a deficient number, since it is larger than the sum of its proper divisors (371951).

4091329 is a wasteful number, since it uses less digits than its factorization.

4091329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371950.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 4091329 is about 2022.7033890316. The cubic root of 4091329 is about 159.9391565534.

The spelling of 4091329 in words is "four million, ninety-one thousand, three hundred twenty-nine".