921984023 has 2 divisors, whose sum is σ = 921984024. Its totient is φ = 921984022.

The previous prime is 921983983. The next prime is 921984053. The reversal of 921984023 is 320489129.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 921984023 - 2¹⁴ = 921967639 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (921984053) 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, 460992011 + 460992012.

It is an arithmetic number, because the mean of its divisors is an integer number (460992012).

Almost surely, 2^921984023 is an apocalyptic number.

921984023 is a deficient number, since it is larger than the sum of its proper divisors (1).

921984023 is an equidigital number, since it uses as much as digits as its factorization.

921984023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 921984023 is about 30364.1898130018. The cubic root of 921984023 is about 973.2874686615.

The spelling of 921984023 in words is "nine hundred twenty-one million, nine hundred eighty-four thousand, twenty-three".