4081906 has 8 divisors (see below), whose sum is σ = 6132060. Its totient is φ = 2037888.

The previous prime is 4081897. The next prime is 4081933. The reversal of 4081906 is 6091804.

It can be written as a sum of positive squares in 2 ways, for example, as 3207681 + 874225 = 1791^2 + 935^2 .

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

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, 910 + ... + 2998.

Almost surely, 2^4081906 is an apocalyptic number.

4081906 is a deficient number, since it is larger than the sum of its proper divisors (2050154).

4081906 is a wasteful number, since it uses less digits than its factorization.

4081906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3068.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 4081906 is about 2020.3727378877. The cubic root of 4081906 is about 159.8162734843.

The spelling of 4081906 in words is "four million, eighty-one thousand, nine hundred six".