921393433 has 2 divisors, whose sum is σ = 921393434. Its totient is φ = 921393432.

The previous prime is 921393427. The next prime is 921393457. The reversal of 921393433 is 334393129.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 894488464 + 26904969 = 29908^2 + 5187^2 .

It is a cyclic number.

It is not a de Polignac number, because 921393433 - 2⁹ = 921392921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 921393392 and 921393401.

It is not a weakly prime, because it can be changed into another prime (921393493) 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, 460696716 + 460696717.

It is an arithmetic number, because the mean of its divisors is an integer number (460696717).

Almost surely, 2^921393433 is an apocalyptic number.

It is an amenable number.

921393433 is a deficient number, since it is larger than the sum of its proper divisors (1).

921393433 is an equidigital number, since it uses as much as digits as its factorization.

921393433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 37.

The square root of 921393433 is about 30354.4631479458. The cubic root of 921393433 is about 973.0796065545.

The spelling of 921393433 in words is "nine hundred twenty-one million, three hundred ninety-three thousand, four hundred thirty-three".