921204983 has 2 divisors, whose sum is σ = 921204984. Its totient is φ = 921204982.

The previous prime is 921204943. The next prime is 921204989. The reversal of 921204983 is 389402129.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 921204983 - 2⁶ = 921204919 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 (921204989) 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, 460602491 + 460602492.

It is an arithmetic number, because the mean of its divisors is an integer number (460602492).

Almost surely, 2^921204983 is an apocalyptic number.

921204983 is a deficient number, since it is larger than the sum of its proper divisors (1).

921204983 is an equidigital number, since it uses as much as digits as its factorization.

921204983 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 921204983 is about 30351.3588328431. The cubic root of 921204983 is about 973.0132616221.

The spelling of 921204983 in words is "nine hundred twenty-one million, two hundred four thousand, nine hundred eighty-three".