20339659 has 12 divisors (see below), whose sum is σ = 21654864. Its totient is φ = 19067664.

The previous prime is 20339653. The next prime is 20339663. The reversal of 20339659 is 95693302.

It is not a de Polignac number, because 20339659 - 2⁹ = 20339147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20339653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103149 + ... + 103345.

It is an arithmetic number, because the mean of its divisors is an integer number (1804572).

Almost surely, 2^20339659 is an apocalyptic number.

20339659 is a deficient number, since it is larger than the sum of its proper divisors (1315205).

20339659 is an equidigital number, since it uses as much as digits as its factorization.

20339659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 37.

The square root of 20339659 is about 4509.9511083824. The cubic root of 20339659 is about 272.9697712821.

The spelling of 20339659 in words is "twenty million, three hundred thirty-nine thousand, six hundred fifty-nine".