3837989 has 2 divisors, whose sum is σ = 3837990. Its totient is φ = 3837988.

The previous prime is 3837979. The next prime is 3837991. The reversal of 3837989 is 9897383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3833764 + 4225 = 1958^2 + 65^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3837989 is a prime.

Together with 3837991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3837949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1918994 + 1918995.

It is an arithmetic number, because the mean of its divisors is an integer number (1918995).

Almost surely, 2^3837989 is an apocalyptic number.

It is an amenable number.

3837989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3837989 is an equidigital number, since it uses as much as digits as its factorization.

3837989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 47.

The square root of 3837989 is about 1959.0786099593. The cubic root of 3837989 is about 156.5673647664.

The spelling of 3837989 in words is "three million, eight hundred thirty-seven thousand, nine hundred eighty-nine".