3894905 has 16 divisors (see below), whose sum is σ = 5623680. Its totient is φ = 2529792.

The previous prime is 3894899. The next prime is 3894923. The reversal of 3894905 is 5094983.

It is a cyclic number.

It is not a de Polignac number, because 3894905 - 2¹⁰ = 3893881 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2264 + ... + 3593.

It is an arithmetic number, because the mean of its divisors is an integer number (351480).

Almost surely, 2^3894905 is an apocalyptic number.

3894905 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3894905 is a deficient number, since it is larger than the sum of its proper divisors (1728775).

3894905 is a wasteful number, since it uses less digits than its factorization.

3894905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5888.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 3894905 is about 1973.5513674592. The cubic root of 3894905 is about 157.3375161477.

The spelling of 3894905 in words is "three million, eight hundred ninety-four thousand, nine hundred five".