1939937 has 2 divisors, whose sum is σ = 1939938. Its totient is φ = 1939936.

The previous prime is 1939913. The next prime is 1939939. The reversal of 1939937 is 7399391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1852321 + 87616 = 1361^2 + 296^2 .

It is an emirp because it is prime and its reverse (7399391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1939937 - 2⁸ = 1939681 is a prime.

Together with 1939939, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1939894 and 1939903.

It is not a weakly prime, because it can be changed into another prime (1939939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969968 + 969969.

It is an arithmetic number, because the mean of its divisors is an integer number (969969).

2^1939937 is an apocalyptic number.

It is an amenable number.

1939937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1939937 is an equidigital number, since it uses as much as digits as its factorization.

1939937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45927, while the sum is 41.

The square root of 1939937 is about 1392.8162118528. The cubic root of 1939937 is about 124.7180203783.

The spelling of 1939937 in words is "one million, nine hundred thirty-nine thousand, nine hundred thirty-seven".