1993259 has 2 divisors, whose sum is σ = 1993260. Its totient is φ = 1993258.

The previous prime is 1993247. The next prime is 1993261. The reversal of 1993259 is 9523991.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1993259 is a prime.

It is a Sophie Germain prime.

Together with 1993261, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1993219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996629 + 996630.

It is an arithmetic number, because the mean of its divisors is an integer number (996630).

2^1993259 is an apocalyptic number.

1993259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993259 is an equidigital number, since it uses as much as digits as its factorization.

1993259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21870, while the sum is 38.

The square root of 1993259 is about 1411.8282473446. The cubic root of 1993259 is about 125.8503935273.

It can be divided in two parts, 19932 and 59, that added together give a palindrome (19991).

The spelling of 1993259 in words is "one million, nine hundred ninety-three thousand, two hundred fifty-nine".