20339807 has 2 divisors, whose sum is σ = 20339808. Its totient is φ = 20339806.

The previous prime is 20339801. The next prime is 20339819. The reversal of 20339807 is 70893302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20339807 - 2⁶ = 20339743 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20339801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10169903 + 10169904.

It is an arithmetic number, because the mean of its divisors is an integer number (10169904).

Almost surely, 2^20339807 is an apocalyptic number.

20339807 is a deficient number, since it is larger than the sum of its proper divisors (1).

20339807 is an equidigital number, since it uses as much as digits as its factorization.

20339807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20339807 is about 4509.9675165127. The cubic root of 20339807 is about 272.9704333618.

The spelling of 20339807 in words is "twenty million, three hundred thirty-nine thousand, eight hundred seven".