4005279 has 6 divisors (see below), whose sum is σ = 5785416. Its totient is φ = 2670180.

The previous prime is 4005271. The next prime is 4005301. The reversal of 4005279 is 9725004.

It is not a de Polignac number, because 4005279 - 2³ = 4005271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005271) 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, 222507 + ... + 222524.

It is an arithmetic number, because the mean of its divisors is an integer number (964236).

Almost surely, 2^4005279 is an apocalyptic number.

4005279 is a deficient number, since it is larger than the sum of its proper divisors (1780137).

4005279 is a wasteful number, since it uses less digits than its factorization.

4005279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445037 (or 445034 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 4005279 is about 2001.3193148521. The cubic root of 4005279 is about 158.8099069168.

The spelling of 4005279 in words is "four million, five thousand, two hundred seventy-nine".