3916409993 has 4 divisors (see below), whose sum is σ = 3916832640. Its totient is φ = 3915987348.

The previous prime is 3916409989. The next prime is 3916410007. The reversal of 3916409993 is 3999046193.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3999046193 = 59971 ⋅66683.

It is a cyclic number.

It is not a de Polignac number, because 3916409993 - 2² = 3916409989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3916409933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197105 + ... + 216062.

It is an arithmetic number, because the mean of its divisors is an integer number (979208160).

Almost surely, 2^3916409993 is an apocalyptic number.

It is an amenable number.

3916409993 is a deficient number, since it is larger than the sum of its proper divisors (422647).

3916409993 is an equidigital number, since it uses as much as digits as its factorization.

3916409993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422646.

The product of its (nonzero) digits is 1417176, while the sum is 53.

The square root of 3916409993 is about 62581.2271611863. The cubic root of 3916409993 is about 1576.2655477766.

The spelling of 3916409993 in words is "three billion, nine hundred sixteen million, four hundred nine thousand, nine hundred ninety-three".