2171000879 has 2 divisors, whose sum is σ = 2171000880. Its totient is φ = 2171000878.

The previous prime is 2171000791. The next prime is 2171000911. The reversal of 2171000879 is 9780001712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2171000879 - 2¹² = 2170996783 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2171000779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085500439 + 1085500440.

It is an arithmetic number, because the mean of its divisors is an integer number (1085500440).

Almost surely, 2^2171000879 is an apocalyptic number.

2171000879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171000879 is an equidigital number, since it uses as much as digits as its factorization.

2171000879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 2171000879 is about 46594.0004614328. Note that the first 3 decimals coincide. The cubic root of 2171000879 is about 1294.8516059595.

The spelling of 2171000879 in words is "two billion, one hundred seventy-one million, eight hundred seventy-nine", and thus it is an aban number.