993203923 has 2 divisors, whose sum is σ = 993203924. Its totient is φ = 993203922.

The previous prime is 993203863. The next prime is 993203957. The reversal of 993203923 is 329302399.

It is a strong prime.

It is an emirp because it is prime and its reverse (329302399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 993203923 - 2²⁵ = 959649491 is a prime.

It is not a weakly prime, because it can be changed into another prime (993203423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496601961 + 496601962.

It is an arithmetic number, because the mean of its divisors is an integer number (496601962).

Almost surely, 2^993203923 is an apocalyptic number.

993203923 is a deficient number, since it is larger than the sum of its proper divisors (1).

993203923 is an equidigital number, since it uses as much as digits as its factorization.

993203923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 40.

The square root of 993203923 is about 31515.1379974767. The cubic root of 993203923 is about 997.7294896846.

The spelling of 993203923 in words is "nine hundred ninety-three million, two hundred three thousand, nine hundred twenty-three".