3949205 has 8 divisors (see below), whose sum is σ = 5103672. Its totient is φ = 2916288.

The previous prime is 3949199. The next prime is 3949213. The reversal of 3949205 is 5029493.

It can be written as a sum of positive squares in 4 ways, for example, as 103684 + 3845521 = 322^2 + 1961^2 .

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 3949205 - 2¹⁶ = 3883669 is a prime.

It is a Duffinian number.

It is a congruent 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, 30314 + ... + 30443.

It is an arithmetic number, because the mean of its divisors is an integer number (637959).

Almost surely, 2^3949205 is an apocalyptic number.

It is an amenable number.

3949205 is a deficient number, since it is larger than the sum of its proper divisors (1154467).

3949205 is a wasteful number, since it uses less digits than its factorization.

3949205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60775.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 3949205 is about 1987.2606774150. The cubic root of 3949205 is about 158.0653070836.

The spelling of 3949205 in words is "three million, nine hundred forty-nine thousand, two hundred five".