3956305 has 4 divisors (see below), whose sum is σ = 4747572. Its totient is φ = 3165040.

The previous prime is 3956297. The next prime is 3956311. The reversal of 3956305 is 5036593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5036593 = 1021 ⋅4933.

It can be written as a sum of positive squares in 2 ways, for example, as 2396304 + 1560001 = 1548^2 + 1249^2 .

It is not a de Polignac number, because 3956305 - 2³ = 3956297 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

3956305 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395626 + ... + 395635.

It is an arithmetic number, because the mean of its divisors is an integer number (1186893).

Almost surely, 2^3956305 is an apocalyptic number.

It is an amenable number.

3956305 is a deficient number, since it is larger than the sum of its proper divisors (791267).

3956305 is an equidigital number, since it uses as much as digits as its factorization.

3956305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791266.

The product of its (nonzero) digits is 12150, while the sum is 31.

The square root of 3956305 is about 1989.0462538614. The cubic root of 3956305 is about 158.1599752345.

The spelling of 3956305 in words is "three million, nine hundred fifty-six thousand, three hundred five".