1993829 has 2 divisors, whose sum is σ = 1993830. Its totient is φ = 1993828.

The previous prime is 1993763. The next prime is 1993861. The reversal of 1993829 is 9283991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1716100 + 277729 = 1310^2 + 527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1993829 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1993529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 996914 + 996915.

It is an arithmetic number, because the mean of its divisors is an integer number (996915).

2^1993829 is an apocalyptic number.

It is an amenable number.

1993829 is a deficient number, since it is larger than the sum of its proper divisors (1).

1993829 is an equidigital number, since it uses as much as digits as its factorization.

1993829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 41.

The square root of 1993829 is about 1412.0300988293. The cubic root of 1993829 is about 125.8623886046.

The spelling of 1993829 in words is "one million, nine hundred ninety-three thousand, eight hundred twenty-nine".