20085939 has 12 divisors (see below), whose sum is σ = 29243136. Its totient is φ = 13284432.

The previous prime is 20085937. The next prime is 20085943. The reversal of 20085939 is 93958002.

It is not a de Polignac number, because 20085939 - 2¹ = 20085937 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20085937) 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, 7644 + ... + 9929.

It is an arithmetic number, because the mean of its divisors is an integer number (2436928).

Almost surely, 2^20085939 is an apocalyptic number.

20085939 is a deficient number, since it is larger than the sum of its proper divisors (9157197).

20085939 is a wasteful number, since it uses less digits than its factorization.

20085939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17706 (or 17703 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 20085939 is about 4481.7339278453. The cubic root of 20085939 is about 271.8299966731.

The spelling of 20085939 in words is "twenty million, eighty-five thousand, nine hundred thirty-nine".