4172421879 has 12 divisors (see below), whose sum is σ = 6083158536. Its totient is φ = 2755617552.

The previous prime is 4172421859. The next prime is 4172421887. The reversal of 4172421879 is 9781242714.

It is not a de Polignac number, because 4172421879 - 2¹⁶ = 4172356343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4172421829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2165404 + ... + 2167329.

It is an arithmetic number, because the mean of its divisors is an integer number (506929878).

Almost surely, 2^4172421879 is an apocalyptic number.

4172421879 is a deficient number, since it is larger than the sum of its proper divisors (1910736657).

4172421879 is a wasteful number, since it uses less digits than its factorization.

4172421879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4332846 (or 4332843 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 4172421879 is about 64594.2867365218. The cubic root of 4172421879 is about 1609.8895130126.

The spelling of 4172421879 in words is "four billion, one hundred seventy-two million, four hundred twenty-one thousand, eight hundred seventy-nine".