4021409279 has 6 divisors (see below), whose sum is σ = 4271877984. Its totient is φ = 3784855520.

The previous prime is 4021409251. The next prime is 4021409317. The reversal of 4021409279 is 9729041204.

4021409279 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4021409279 - 2¹² = 4021405183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021409209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6957167 + ... + 6957744.

It is an arithmetic number, because the mean of its divisors is an integer number (711979664).

Almost surely, 2^4021409279 is an apocalyptic number.

4021409279 is a deficient number, since it is larger than the sum of its proper divisors (250468705).

4021409279 is a wasteful number, since it uses less digits than its factorization.

4021409279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13914945 (or 13914928 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 4021409279 is about 63414.5825421882. The cubic root of 4021409279 is about 1590.2281068513.

The spelling of 4021409279 in words is "four billion, twenty-one million, four hundred nine thousand, two hundred seventy-nine".