4056905 has 8 divisors (see below), whose sum is σ = 4914432. Its totient is φ = 3214768.

The previous prime is 4056893. The next prime is 4056919. The reversal of 4056905 is 5096504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4056905 - 2¹⁶ = 3991369 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3257 + ... + 4326.

It is an arithmetic number, because the mean of its divisors is an integer number (614304).

Almost surely, 2^4056905 is an apocalyptic number.

It is an amenable number.

4056905 is a deficient number, since it is larger than the sum of its proper divisors (857527).

4056905 is a wasteful number, since it uses less digits than its factorization.

4056905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7695.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 4056905 is about 2014.1760101838. The cubic root of 4056905 is about 159.4893223068.

The spelling of 4056905 in words is "four million, fifty-six thousand, nine hundred five".