20039829 has 8 divisors (see below), whose sum is σ = 27442080. Its totient is φ = 12998736.

The previous prime is 20039827. The next prime is 20039843. The reversal of 20039829 is 92893002.

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

It is not a de Polignac number, because 20039829 - 2¹ = 20039827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20039829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20039827) 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 7 ways as a sum of consecutive naturals, for example, 90159 + ... + 90380.

It is an arithmetic number, because the mean of its divisors is an integer number (3430260).

Almost surely, 2^20039829 is an apocalyptic number.

It is an amenable number.

20039829 is a deficient number, since it is larger than the sum of its proper divisors (7402251).

20039829 is a wasteful number, since it uses less digits than its factorization.

20039829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180579.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 20039829 is about 4476.5867577877. The cubic root of 20039829 is about 271.6218297456.

The spelling of 20039829 in words is "twenty million, thirty-nine thousand, eight hundred twenty-nine".