3890205 has 48 divisors (see below), whose sum is σ = 7637760. Its totient is φ = 1814400.

The previous prime is 3890191. The next prime is 3890219. The reversal of 3890205 is 5020983.

It is an interprime number because it is at equal distance from previous prime (3890191) and next prime (3890219).

It is not a de Polignac number, because 3890205 - 2⁴ = 3890189 is a prime.

It is a super-4 number, since 4×3890205⁴ (a number of 27 digits) contains 4444 as substring.

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 47 ways as a sum of consecutive naturals, for example, 14220 + ... + 14490.

It is an arithmetic number, because the mean of its divisors is an integer number (159120).

Almost surely, 2^3890205 is an apocalyptic number.

It is an amenable number.

3890205 is a deficient number, since it is larger than the sum of its proper divisors (3747555).

3890205 is a wasteful number, since it uses less digits than its factorization.

3890205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 3890205 is about 1972.3602612099. The cubic root of 3890205 is about 157.2742040367.

It can be divided in two parts, 3890 and 205, that added together give a triangular number (4095 = T₉₀).

The spelling of 3890205 in words is "three million, eight hundred ninety thousand, two hundred five".