4026905 has 4 divisors (see below), whose sum is σ = 4832292. Its totient is φ = 3221520.

The previous prime is 4026889. The next prime is 4026937. The reversal of 4026905 is 5096204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2972176 + 1054729 = 1724^2 + 1027^2 .

It is not a de Polignac number, because 4026905 - 2⁴ = 4026889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402686 + ... + 402695.

It is an arithmetic number, because the mean of its divisors is an integer number (1208073).

Almost surely, 2^4026905 is an apocalyptic number.

It is an amenable number.

4026905 is a deficient number, since it is larger than the sum of its proper divisors (805387).

4026905 is an equidigital number, since it uses as much as digits as its factorization.

4026905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805386.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 4026905 is about 2006.7149772701. The cubic root of 4026905 is about 159.0952187330.

The spelling of 4026905 in words is "four million, twenty-six thousand, nine hundred five".