3913345 has 4 divisors (see below), whose sum is σ = 4696020. Its totient is φ = 3130672.

The previous prime is 3913331. The next prime is 3913369. The reversal of 3913345 is 5433193.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5433193 = 1789 ⋅3037.

It can be written as a sum of positive squares in 2 ways, for example, as 2039184 + 1874161 = 1428^2 + 1369^2 .

It is a cyclic number.

It is not a de Polignac number, because 3913345 - 2⁹ = 3912833 is a prime.

3913345 is a lucky 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, 391330 + ... + 391339.

It is an arithmetic number, because the mean of its divisors is an integer number (1174005).

Almost surely, 2^3913345 is an apocalyptic number.

It is an amenable number.

3913345 is a deficient number, since it is larger than the sum of its proper divisors (782675).

3913345 is an equidigital number, since it uses as much as digits as its factorization.

3913345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782674.

The product of its digits is 4860, while the sum is 28.

The square root of 3913345 is about 1978.2176321123. The cubic root of 3913345 is about 157.5854243909.

The spelling of 3913345 in words is "three million, nine hundred thirteen thousand, three hundred forty-five".