3855907 has 8 divisors (see below), whose sum is σ = 4242672. Its totient is φ = 3504160.

The previous prime is 3855857. The next prime is 3855913. The reversal of 3855907 is 7095583.

It is not a de Polignac number, because 3855907 - 2⁷ = 3855779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3855937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118 + ... + 2779.

It is an arithmetic number, because the mean of its divisors is an integer number (530334).

Almost surely, 2^3855907 is an apocalyptic number.

3855907 is a deficient number, since it is larger than the sum of its proper divisors (386765).

3855907 is an equidigital number, since it uses as much as digits as its factorization.

3855907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930 (or 2908 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 3855907 is about 1963.6463530891. The cubic root of 3855907 is about 156.8106362310.

It can be divided in two parts, 38 and 55907, that added together give a triangular number (55945 = T₃₃₄).

The spelling of 3855907 in words is "three million, eight hundred fifty-five thousand, nine hundred seven".