3930440393 has 4 divisors (see below), whose sum is σ = 4287753168. Its totient is φ = 3573127620.

The previous prime is 3930440299. The next prime is 3930440407.

It is a happy number.

3930440393 is nontrivially palindromic in base 10.

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.

It is a cyclic number.

It is not a de Polignac number, because 3930440393 - 2¹² = 3930436297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3930440993) 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, 178656371 + ... + 178656392.

It is an arithmetic number, because the mean of its divisors is an integer number (1071938292).

Almost surely, 2^3930440393 is an apocalyptic number.

It is an amenable number.

3930440393 is a deficient number, since it is larger than the sum of its proper divisors (357312775).

3930440393 is a wasteful number, since it uses less digits than its factorization.

3930440393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357312774.

The product of its (nonzero) digits is 104976, while the sum is 38.

The square root of 3930440393 is about 62693.2244584692. The cubic root of 3930440393 is about 1578.1456096295.

It can be divided in two parts, 39304 and 40393, that added together give a palindrome (79697).

The spelling of 3930440393 in words is "three billion, nine hundred thirty million, four hundred forty thousand, three hundred ninety-three".