3870239 has 2 divisors, whose sum is σ = 3870240. Its totient is φ = 3870238.

The previous prime is 3870227. The next prime is 3870247. The reversal of 3870239 is 9320783.

It is a strong prime.

It is an emirp because it is prime and its reverse (9320783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3870239 - 2¹² = 3866143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3870259) 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 as a sum of consecutive naturals, namely, 1935119 + 1935120.

It is an arithmetic number, because the mean of its divisors is an integer number (1935120).

Almost surely, 2^3870239 is an apocalyptic number.

3870239 is a deficient number, since it is larger than the sum of its proper divisors (1).

3870239 is an equidigital number, since it uses as much as digits as its factorization.

3870239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 3870239 is about 1967.2923016166. The cubic root of 3870239 is about 157.0046788874.

The spelling of 3870239 in words is "three million, eight hundred seventy thousand, two hundred thirty-nine".