308924939 has 2 divisors, whose sum is σ = 308924940. Its totient is φ = 308924938.

The previous prime is 308924911. The next prime is 308924953. The reversal of 308924939 is 939429803.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 308924939 - 2¹⁶ = 308859403 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 308924893 and 308924902.

It is not a weakly prime, because it can be changed into another prime (308923939) 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, 154462469 + 154462470.

It is an arithmetic number, because the mean of its divisors is an integer number (154462470).

Almost surely, 2^308924939 is an apocalyptic number.

308924939 is a deficient number, since it is larger than the sum of its proper divisors (1).

308924939 is an equidigital number, since it uses as much as digits as its factorization.

308924939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 308924939 is about 17576.2606660234. The cubic root of 308924939 is about 676.0066837277.

The spelling of 308924939 in words is "three hundred eight million, nine hundred twenty-four thousand, nine hundred thirty-nine".