4013345 has 12 divisors (see below), whose sum is σ = 5602644. Its totient is φ = 2751840.

The previous prime is 4013329. The next prime is 4013363. The reversal of 4013345 is 5433104.

It can be written as a sum of positive squares in 2 ways, for example, as 414736 + 3598609 = 644^2 + 1897^2 .

It is not a de Polignac number, because 4013345 - 2⁴ = 4013329 is a prime.

It is a super-2 number, since 2×4013345² = 32213876178050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7946 + ... + 8435.

It is an arithmetic number, because the mean of its divisors is an integer number (466887).

Almost surely, 2^4013345 is an apocalyptic number.

It is an amenable number.

4013345 is a deficient number, since it is larger than the sum of its proper divisors (1589299).

4013345 is a wasteful number, since it uses less digits than its factorization.

4013345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16400 (or 16393 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 4013345 is about 2003.3334719911. Note that the first 3 decimals coincide. The cubic root of 4013345 is about 158.9164414667.

Adding to 4013345 its reverse (5433104), we get a palindrome (9446449).

The spelling of 4013345 in words is "four million, thirteen thousand, three hundred forty-five".