923047421 has 2 divisors, whose sum is σ = 923047422. Its totient is φ = 923047420.

The previous prime is 923047373. The next prime is 923047423. The reversal of 923047421 is 124740329.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 801739225 + 121308196 = 28315^2 + 11014^2 .

It is a cyclic number.

It is not a de Polignac number, because 923047421 - 2¹⁴ = 923031037 is a prime.

It is a Sophie Germain prime.

Together with 923047423, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is equal to p_47127191 and since 923047421 and 47127191 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (923047423) 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, 461523710 + 461523711.

It is an arithmetic number, because the mean of its divisors is an integer number (461523711).

Almost surely, 2^923047421 is an apocalyptic number.

It is an amenable number.

923047421 is a deficient number, since it is larger than the sum of its proper divisors (1).

923047421 is an equidigital number, since it uses as much as digits as its factorization.

923047421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 923047421 is about 30381.6954925165. The cubic root of 923047421 is about 973.6615150164.

The spelling of 923047421 in words is "nine hundred twenty-three million, forty-seven thousand, four hundred twenty-one".