329425909 has 4 divisors (see below), whose sum is σ = 329762016. Its totient is φ = 329089804.

The previous prime is 329425903. The next prime is 329425919. The reversal of 329425909 is 909524923.

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, and also an emirpimes, since its reverse is a distinct semiprime: 909524923 = 199 ⋅4570477.

It is a cyclic number.

It is not a de Polignac number, because 329425909 - 2¹⁷ = 329294837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329425903) 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, 166579 + ... + 168544.

It is an arithmetic number, because the mean of its divisors is an integer number (82440504).

Almost surely, 2^329425909 is an apocalyptic number.

It is an amenable number.

329425909 is a deficient number, since it is larger than the sum of its proper divisors (336107).

329425909 is an equidigital number, since it uses as much as digits as its factorization.

329425909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336106.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 329425909 is about 18150.0939116028. The cubic root of 329425909 is about 690.6413619350.

The spelling of 329425909 in words is "three hundred twenty-nine million, four hundred twenty-five thousand, nine hundred nine".