4021979055 has 32 divisors (see below), whose sum is σ = 6516987840. Its totient is φ = 2117928960.

The previous prime is 4021979053. The next prime is 4021979141. The reversal of 4021979055 is 5509791204.

It is not a de Polignac number, because 4021979055 - 2¹ = 4021979053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4021978998 and 4021979016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021979053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 451545 + ... + 460365.

It is an arithmetic number, because the mean of its divisors is an integer number (203655870).

Almost surely, 2^4021979055 is an apocalyptic number.

4021979055 is a deficient number, since it is larger than the sum of its proper divisors (2495008785).

4021979055 is a wasteful number, since it uses less digits than its factorization.

4021979055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9211.

The product of its (nonzero) digits is 113400, while the sum is 42.

The square root of 4021979055 is about 63419.0748513411. The cubic root of 4021979055 is about 1590.3032074738.

The spelling of 4021979055 in words is "four billion, twenty-one million, nine hundred seventy-nine thousand, fifty-five".