3855957 has 24 divisors (see below), whose sum is σ = 6336576. Its totient is φ = 2072448.

The previous prime is 3855953. The next prime is 3855961. The reversal of 3855957 is 7595583.

It is an interprime number because it is at equal distance from previous prime (3855953) and next prime (3855961).

It is not a de Polignac number, because 3855957 - 2² = 3855953 is a prime.

3855957 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855953) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1728 + ... + 3270.

It is an arithmetic number, because the mean of its divisors is an integer number (264024).

Almost surely, 2^3855957 is an apocalyptic number.

It is an amenable number.

3855957 is a deficient number, since it is larger than the sum of its proper divisors (2480619).

3855957 is a wasteful number, since it uses less digits than its factorization.

3855957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577 (or 1570 counting only the distinct ones).

The product of its digits is 189000, while the sum is 42.

The square root of 3855957 is about 1963.6590844645. The cubic root of 3855957 is about 156.8113140220.

The spelling of 3855957 in words is "three million, eight hundred fifty-five thousand, nine hundred fifty-seven".