4129009 has 4 divisors (see below), whose sum is σ = 4190704. Its totient is φ = 4067316.

The previous prime is 4129007. The next prime is 4129031. The reversal of 4129009 is 9009214.

4129009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9009214 = 2 ⋅4504607.

It is a cyclic number.

It is not a de Polignac number, because 4129009 - 2¹ = 4129007 is a prime.

It is a Duffinian number.

4129009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4129003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30747 + ... + 30880.

It is an arithmetic number, because the mean of its divisors is an integer number (1047676).

Almost surely, 2^4129009 is an apocalyptic number.

It is an amenable number.

4129009 is a deficient number, since it is larger than the sum of its proper divisors (61695).

4129009 is an equidigital number, since it uses as much as digits as its factorization.

4129009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61694.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 4129009 is about 2031.9963090518. The cubic root of 4129009 is about 160.4286552536.

The spelling of 4129009 in words is "four million, one hundred twenty-nine thousand, nine".