3923421401 has 2 divisors, whose sum is σ = 3923421402. Its totient is φ = 3923421400.

The previous prime is 3923421379. The next prime is 3923421413. The reversal of 3923421401 is 1041243293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3573170176 + 350251225 = 59776^2 + 18715^2 .

It is an emirp because it is prime and its reverse (1041243293) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3923421401 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3923421421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1961710700 + 1961710701.

It is an arithmetic number, because the mean of its divisors is an integer number (1961710701).

Almost surely, 2^3923421401 is an apocalyptic number.

It is an amenable number.

3923421401 is a deficient number, since it is larger than the sum of its proper divisors (1).

3923421401 is an equidigital number, since it uses as much as digits as its factorization.

3923421401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 3923421401 is about 62637.2205721167. The cubic root of 3923421401 is about 1577.2056308464.

Adding to 3923421401 its reverse (1041243293), we get a palindrome (4964664694).

The spelling of 3923421401 in words is "three billion, nine hundred twenty-three million, four hundred twenty-one thousand, four hundred one".