1655939 has 2 divisors, whose sum is σ = 1655940. Its totient is φ = 1655938.

The previous prime is 1655921. The next prime is 1655947. The reversal of 1655939 is 9395561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1655939 - 2⁸ = 1655683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1655909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 827969 + 827970.

It is an arithmetic number, because the mean of its divisors is an integer number (827970).

2^1655939 is an apocalyptic number.

1655939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1655939 is an equidigital number, since it uses as much as digits as its factorization.

1655939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36450, while the sum is 38.

The square root of 1655939 is about 1286.8329339895. The cubic root of 1655939 is about 118.3081813015.

It can be divided in two parts, 16 and 55939, that added together give a palindrome (55955).

The spelling of 1655939 in words is "one million, six hundred fifty-five thousand, nine hundred thirty-nine".