1293923 has 2 divisors, whose sum is σ = 1293924. Its totient is φ = 1293922.

The previous prime is 1293917. The next prime is 1293931. The reversal of 1293923 is 3293921.

1293923 is nontrivially palindromic in base 9.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1293923 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1293983) 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, 646961 + 646962.

It is an arithmetic number, because the mean of its divisors is an integer number (646962).

2^1293923 is an apocalyptic number.

1293923 is a deficient number, since it is larger than the sum of its proper divisors (1).

1293923 is an equidigital number, since it uses as much as digits as its factorization.

1293923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2916, while the sum is 29.

The square root of 1293923 is about 1137.5073626135. The cubic root of 1293923 is about 108.9689612265.

The spelling of 1293923 in words is "one million, two hundred ninety-three thousand, nine hundred twenty-three".