1025939 has 2 divisors, whose sum is σ = 1025940. Its totient is φ = 1025938.

The previous prime is 1025929. The next prime is 1025957. The reversal of 1025939 is 9395201.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1025939 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1025909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512969 + 512970.

It is an arithmetic number, because the mean of its divisors is an integer number (512970).

2^1025939 is an apocalyptic number.

1025939 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025939 is an equidigital number, since it uses as much as digits as its factorization.

1025939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 1025939 is about 1012.8864694525. The cubic root of 1025939 is about 100.8572633291.

The spelling of 1025939 in words is "one million, twenty-five thousand, nine hundred thirty-nine".