1955939 has 2 divisors, whose sum is σ = 1955940. Its totient is φ = 1955938.

The previous prime is 1955893. The next prime is 1955957. The reversal of 1955939 is 9395591.

It is a strong prime.

It is an emirp because it is prime and its reverse (9395591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1955939 - 2¹² = 1951843 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1955896 and 1955905.

It is not a weakly prime, because it can be changed into another prime (1955959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 977969 + 977970.

It is an arithmetic number, because the mean of its divisors is an integer number (977970).

2^1955939 is an apocalyptic number.

1955939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1955939 is an equidigital number, since it uses as much as digits as its factorization.

1955939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54675, while the sum is 41.

The square root of 1955939 is about 1398.5488908150. The cubic root of 1955939 is about 125.0600031923.

The spelling of 1955939 in words is "one million, nine hundred fifty-five thousand, nine hundred thirty-nine".