2872173979 has 2 divisors, whose sum is σ = 2872173980. Its totient is φ = 2872173978.

The previous prime is 2872173947. The next prime is 2872174001. The reversal of 2872173979 is 9793712782.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2872173979 - 2⁵ = 2872173947 is a prime.

It is not a weakly prime, because it can be changed into another prime (2872173679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1436086989 + 1436086990.

It is an arithmetic number, because the mean of its divisors is an integer number (1436086990).

Almost surely, 2^2872173979 is an apocalyptic number.

2872173979 is a deficient number, since it is larger than the sum of its proper divisors (1).

2872173979 is an equidigital number, since it uses as much as digits as its factorization.

2872173979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2667168, while the sum is 55.

The square root of 2872173979 is about 53592.6672129686. The cubic root of 2872173979 is about 1421.4674341258.

The spelling of 2872173979 in words is "two billion, eight hundred seventy-two million, one hundred seventy-three thousand, nine hundred seventy-nine".