383709923 has 2 divisors, whose sum is σ = 383709924. Its totient is φ = 383709922.

The previous prime is 383709889. The next prime is 383709929. The reversal of 383709923 is 329907383.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-383709923 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (383709929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191854961 + 191854962.

It is an arithmetic number, because the mean of its divisors is an integer number (191854962).

Almost surely, 2^383709923 is an apocalyptic number.

383709923 is a deficient number, since it is larger than the sum of its proper divisors (1).

383709923 is an equidigital number, since it uses as much as digits as its factorization.

383709923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 383709923 is about 19588.5150789946. The cubic root of 383709923 is about 726.6651684966.

The spelling of 383709923 in words is "three hundred eighty-three million, seven hundred nine thousand, nine hundred twenty-three".