20939103 has 6 divisors (see below), whose sum is σ = 30245384. Its totient is φ = 13959396.

The previous prime is 20939071. The next prime is 20939123. The reversal of 20939103 is 30193902.

It is not a de Polignac number, because 20939103 - 2⁵ = 20939071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20939123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1163275 + ... + 1163292.

Almost surely, 2^20939103 is an apocalyptic number.

20939103 is a deficient number, since it is larger than the sum of its proper divisors (9306281).

20939103 is a wasteful number, since it uses less digits than its factorization.

20939103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326573 (or 2326570 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 20939103 is about 4575.9264635700. The cubic root of 20939103 is about 275.6254765753.

The spelling of 20939103 in words is "twenty million, nine hundred thirty-nine thousand, one hundred three".