3877857 has 6 divisors (see below), whose sum is σ = 5601362. Its totient is φ = 2585232.

The previous prime is 3877849. The next prime is 3877871. The reversal of 3877857 is 7587783.

It can be written as a sum of positive squares in only one way, i.e., 3721041 + 156816 = 1929^2 + 396^2 .

It is not a de Polignac number, because 3877857 - 2³ = 3877849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3877817) 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 5 ways as a sum of consecutive naturals, for example, 215428 + ... + 215445.

Almost surely, 2^3877857 is an apocalyptic number.

It is an amenable number.

3877857 is a deficient number, since it is larger than the sum of its proper divisors (1723505).

3877857 is a wasteful number, since it uses less digits than its factorization.

3877857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430879 (or 430876 counting only the distinct ones).

The product of its digits is 329280, while the sum is 45.

The square root of 3877857 is about 1969.2275135189. The cubic root of 3877857 is about 157.1076249624.

The spelling of 3877857 in words is "three million, eight hundred seventy-seven thousand, eight hundred fifty-seven".