3877021 has 4 divisors (see below), whose sum is σ = 3912700. Its totient is φ = 3841344.

The previous prime is 3876997. The next prime is 3877033. The reversal of 3877021 is 1207783.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1207783 = 967 ⋅1249.

It can be written as a sum of positive squares in 2 ways, for example, as 3367225 + 509796 = 1835^2 + 714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3877021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3877061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17676 + ... + 17893.

It is an arithmetic number, because the mean of its divisors is an integer number (978175).

Almost surely, 2^3877021 is an apocalyptic number.

It is an amenable number.

3877021 is a deficient number, since it is larger than the sum of its proper divisors (35679).

3877021 is a wasteful number, since it uses less digits than its factorization.

3877021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35678.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 3877021 is about 1969.0152361015. The cubic root of 3877021 is about 157.0963342406.

The spelling of 3877021 in words is "three million, eight hundred seventy-seven thousand, twenty-one".