4025979909 has 64 divisors (see below), whose sum is σ = 7050854400. Its totient is φ = 2222722944.

The previous prime is 4025979833. The next prime is 4025979911. The reversal of 4025979909 is 9099795204.

4025979909 is a `hidden beast` number, since 40 + 2 + 597 + 9 + 9 + 0 + 9 = 666.

It is not a de Polignac number, because 4025979909 - 2⁸ = 4025979653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4025979929) 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 63 ways as a sum of consecutive naturals, for example, 698889 + ... + 704625.

It is an arithmetic number, because the mean of its divisors is an integer number (110169600).

Almost surely, 2^4025979909 is an apocalyptic number.

It is an amenable number.

4025979909 is a deficient number, since it is larger than the sum of its proper divisors (3024874491).

4025979909 is a wasteful number, since it uses less digits than its factorization.

4025979909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5879 (or 5873 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 54.

The square root of 4025979909 is about 63450.6099970678. The cubic root of 4025979909 is about 1590.8303494860.

The spelling of 4025979909 in words is "four billion, twenty-five million, nine hundred seventy-nine thousand, nine hundred nine".