3865490 has 8 divisors (see below), whose sum is σ = 6957900. Its totient is φ = 1546192.

The previous prime is 3865481. The next prime is 3865513. The reversal of 3865490 is 945683.

It can be written as a sum of positive squares in 2 ways, for example, as 3301489 + 564001 = 1817^2 + 751^2 .

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

It is a Curzon number.

It is a zygodrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 3865490.

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, 193265 + ... + 193284.

Almost surely, 2^3865490 is an apocalyptic number.

3865490 is a deficient number, since it is larger than the sum of its proper divisors (3092410).

3865490 is a wasteful number, since it uses less digits than its factorization.

3865490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386556.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 3865490 is about 1966.0849422138. The cubic root of 3865490 is about 156.9404347586.

The spelling of 3865490 in words is "three million, eight hundred sixty-five thousand, four hundred ninety".