3976389 has 12 divisors (see below), whose sum is σ = 5777772. Its totient is φ = 2635200.

The previous prime is 3976387. The next prime is 3976391. The reversal of 3976389 is 9836793.

It is a happy number.

3976389 is a `hidden beast` number, since 3 + 9 + 7 + 638 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (3976387) and next prime (3976391).

It can be written as a sum of positive squares in 2 ways, for example, as 173889 + 3802500 = 417^2 + 1950^2 .

It is not a de Polignac number, because 3976389 - 2¹ = 3976387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3976381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 409 + ... + 2849.

It is an arithmetic number, because the mean of its divisors is an integer number (481481).

Almost surely, 2^3976389 is an apocalyptic number.

It is an amenable number.

3976389 is a deficient number, since it is larger than the sum of its proper divisors (1801383).

3976389 is a wasteful number, since it uses less digits than its factorization.

3976389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628 (or 2625 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 3976389 is about 1994.0885135821. The cubic root of 3976389 is about 158.4271542443.

It can be divided in two parts, 397 and 6389, that added together give a triangular number (6786 = T₁₁₆).

The spelling of 3976389 in words is "three million, nine hundred seventy-six thousand, three hundred eighty-nine".