20795939 has 2 divisors, whose sum is σ = 20795940. Its totient is φ = 20795938.

The previous prime is 20795923. The next prime is 20795959. The reversal of 20795939 is 93959702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20795939 - 2⁴ = 20795923 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20795939.

It is not a weakly prime, because it can be changed into another prime (20795959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10397969 + 10397970.

It is an arithmetic number, because the mean of its divisors is an integer number (10397970).

Almost surely, 2^20795939 is an apocalyptic number.

20795939 is a deficient number, since it is larger than the sum of its proper divisors (1).

20795939 is an equidigital number, since it uses as much as digits as its factorization.

20795939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 153090, while the sum is 44.

The square root of 20795939 is about 4560.2564620863. The cubic root of 20795939 is about 274.9958743183.

The spelling of 20795939 in words is "twenty million, seven hundred ninety-five thousand, nine hundred thirty-nine".