3876401 has 4 divisors (see below), whose sum is σ = 4010100. Its totient is φ = 3742704.

The previous prime is 3876371. The next prime is 3876403. The reversal of 3876401 is 1046783.

3876401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1046783 = 277 ⋅3779.

It can be written as a sum of positive squares in 2 ways, for example, as 640000 + 3236401 = 800^2 + 1799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3876401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 133669 = 3876401 / (3 + 8 + 7 + 6 + 4 + 0 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3876403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66806 + ... + 66863.

It is an arithmetic number, because the mean of its divisors is an integer number (1002525).

Almost surely, 2^3876401 is an apocalyptic number.

3876401 is the 881-st centered decagonal number.

It is an amenable number.

3876401 is a deficient number, since it is larger than the sum of its proper divisors (133699).

3876401 is a wasteful number, since it uses less digits than its factorization.

3876401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133698.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 3876401 is about 1968.8577907000. The cubic root of 3876401 is about 157.0879596905.

The spelling of 3876401 in words is "three million, eight hundred seventy-six thousand, four hundred one".