3923323421 has 2 divisors, whose sum is σ = 3923323422. Its totient is φ = 3923323420.

The previous prime is 3923323409. The next prime is 3923323541. The reversal of 3923323421 is 1243233293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3579628900 + 343694521 = 59830^2 + 18539^2 .

It is an emirp because it is prime and its reverse (1243233293) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3923323421 - 2¹⁸ = 3923061277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (923323421) 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, 1961661710 + 1961661711.

It is an arithmetic number, because the mean of its divisors is an integer number (1961661711).

Almost surely, 2^3923323421 is an apocalyptic number.

It is an amenable number.

3923323421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3923323421 is an equidigital number, since it uses as much as digits as its factorization.

3923323421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 32.

The square root of 3923323421 is about 62636.4384444071. The cubic root of 3923323421 is about 1577.1925014984.

The spelling of 3923323421 in words is "three billion, nine hundred twenty-three million, three hundred twenty-three thousand, four hundred twenty-one".