3994505 has 8 divisors (see below), whose sum is σ = 4948224. Its totient is φ = 3092400.

The previous prime is 3994499. The next prime is 3994513. The reversal of 3994505 is 5054993.

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

It is not a de Polignac number, because 3994505 - 2¹⁰ = 3993481 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12731 + ... + 13040.

It is an arithmetic number, because the mean of its divisors is an integer number (618528).

Almost surely, 2^3994505 is an apocalyptic number.

It is an amenable number.

3994505 is a deficient number, since it is larger than the sum of its proper divisors (953719).

3994505 is a wasteful number, since it uses less digits than its factorization.

3994505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25807.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 3994505 is about 1998.6257778784. The cubic root of 3994505 is about 158.6673821457.

The spelling of 3994505 in words is "three million, nine hundred ninety-four thousand, five hundred five".