20000879 has 2 divisors, whose sum is σ = 20000880. Its totient is φ = 20000878.

The previous prime is 20000873. The next prime is 20000909. The reversal of 20000879 is 97800002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20000879 - 2⁸ = 20000623 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 (20000873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000439 + 10000440.

It is an arithmetic number, because the mean of its divisors is an integer number (10000440).

Almost surely, 2^20000879 is an apocalyptic number.

20000879 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000879 is an equidigital number, since it uses as much as digits as its factorization.

20000879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 20000879 is about 4472.2342291074. The cubic root of 20000879 is about 271.4457382230.

The spelling of 20000879 in words is "twenty million, eight hundred seventy-nine", and thus it is an aban number.