1993039 has 2 divisors, whose sum is σ = 1993040. Its totient is φ = 1993038.

The previous prime is 1993037. The next prime is 1993067. The reversal of 1993039 is 9303991.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1993039 - 2¹ = 1993037 is a prime.

Together with 1993037, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1992995 and 1993013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1993031) 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, 996519 + 996520.

It is an arithmetic number, because the mean of its divisors is an integer number (996520).

2^1993039 is an apocalyptic number.

1993039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993039 is an equidigital number, since it uses as much as digits as its factorization.

1993039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 1993039 is about 1411.7503320347. The cubic root of 1993039 is about 125.8457632366.

The spelling of 1993039 in words is "one million, nine hundred ninety-three thousand, thirty-nine".