3980287 has 2 divisors, whose sum is σ = 3980288. Its totient is φ = 3980286.

The previous prime is 3980281. The next prime is 3980299. The reversal of 3980287 is 7820893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3980287 - 2¹⁹ = 3455999 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3980281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1990143 + 1990144.

It is an arithmetic number, because the mean of its divisors is an integer number (1990144).

Almost surely, 2^3980287 is an apocalyptic number.

3980287 is a deficient number, since it is larger than the sum of its proper divisors (1).

3980287 is an equidigital number, since it uses as much as digits as its factorization.

3980287 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 3980287 is about 1995.0656630798. The cubic root of 3980287 is about 158.4789053318.

Subtracting 3980287 from its reverse (7820893), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 3980287 in words is "three million, nine hundred eighty thousand, two hundred eighty-seven".