20039329 has 4 divisors (see below), whose sum is σ = 20264580. Its totient is φ = 19814080.

The previous prime is 20039321. The next prime is 20039339. The reversal of 20039329 is 92393002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1134225 + 18905104 = 1065^2 + 4348^2 .

It is a cyclic number.

It is not a de Polignac number, because 20039329 - 2³ = 20039321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20039297 and 20039306.

It is not an unprimeable number, because it can be changed into a prime (20039321) 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, 112492 + ... + 112669.

It is an arithmetic number, because the mean of its divisors is an integer number (5066145).

Almost surely, 2^20039329 is an apocalyptic number.

It is an amenable number.

20039329 is a deficient number, since it is larger than the sum of its proper divisors (225251).

20039329 is an equidigital number, since it uses as much as digits as its factorization.

20039329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225250.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 20039329 is about 4476.5309113196. The cubic root of 20039329 is about 271.6195707102.

The spelling of 20039329 in words is "twenty million, thirty-nine thousand, three hundred twenty-nine".