3930305 has 4 divisors (see below), whose sum is σ = 4716372. Its totient is φ = 3144240.

The previous prime is 3930293. The next prime is 3930307. The reversal of 3930305 is 5030393.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5030393 = 241 ⋅20873.

It can be written as a sum of positive squares in 2 ways, for example, as 790321 + 3139984 = 889^2 + 1772^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3930305 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3930307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393026 + ... + 393035.

It is an arithmetic number, because the mean of its divisors is an integer number (1179093).

Almost surely, 2^3930305 is an apocalyptic number.

It is an amenable number.

3930305 is a deficient number, since it is larger than the sum of its proper divisors (786067).

3930305 is an equidigital number, since it uses as much as digits as its factorization.

3930305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786066.

The product of its (nonzero) digits is 1215, while the sum is 23.

The square root of 3930305 is about 1982.4996847415. The cubic root of 3930305 is about 157.8127488478.

Adding to 3930305 its reverse (5030393), we get a palindrome (8960698).

The spelling of 3930305 in words is "three million, nine hundred thirty thousand, three hundred five".