3861406 has 12 divisors (see below), whose sum is σ = 5890176. Its totient is φ = 1898540.

The previous prime is 3861383. The next prime is 3861413. The reversal of 3861406 is 6041683.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9891 + ... + 10273.

It is an arithmetic number, because the mean of its divisors is an integer number (490848).

Almost surely, 2^3861406 is an apocalyptic number.

3861406 is a deficient number, since it is larger than the sum of its proper divisors (2028770).

3861406 is an equidigital number, since it uses as much as digits as its factorization.

3861406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 3861406 is about 1965.0460554399. The cubic root of 3861406 is about 156.8851446062.

The spelling of 3861406 in words is "three million, eight hundred sixty-one thousand, four hundred six".