3937289 has 2 divisors, whose sum is σ = 3937290. Its totient is φ = 3937288.

The previous prime is 3937273. The next prime is 3937291. The reversal of 3937289 is 9827393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2689600 + 1247689 = 1640^2 + 1117^2 .

It is an emirp because it is prime and its reverse (9827393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3937289 - 2⁴ = 3937273 is a prime.

Together with 3937291, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3937229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1968644 + 1968645.

It is an arithmetic number, because the mean of its divisors is an integer number (1968645).

Almost surely, 2^3937289 is an apocalyptic number.

It is an amenable number.

3937289 is a deficient number, since it is larger than the sum of its proper divisors (1).

3937289 is an equidigital number, since it uses as much as digits as its factorization.

3937289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The square root of 3937289 is about 1984.2603155836. The cubic root of 3937289 is about 157.9061692521.

The spelling of 3937289 in words is "three million, nine hundred thirty-seven thousand, two hundred eighty-nine".