3945511 has 4 divisors (see below), whose sum is σ = 3953272. Its totient is φ = 3937752.

The previous prime is 3945467. The next prime is 3945527. The reversal of 3945511 is 1155493.

3945511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1155493 = 107 ⋅10799.

It is a cyclic number.

It is not a de Polignac number, because 3945511 - 2⁹ = 3944999 is a prime.

It is a super-2 number, since 2×3945511² = 31134114102242, which contains 22 as substring.

It is a Duffinian number.

3945511 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3945511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3946511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3060 + ... + 4153.

It is an arithmetic number, because the mean of its divisors is an integer number (988318).

Almost surely, 2^3945511 is an apocalyptic number.

3945511 is a deficient number, since it is larger than the sum of its proper divisors (7761).

3945511 is an equidigital number, since it uses as much as digits as its factorization.

3945511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7760.

The product of its digits is 2700, while the sum is 28.

The square root of 3945511 is about 1986.3310398823. The cubic root of 3945511 is about 158.0160080987.

The spelling of 3945511 in words is "three million, nine hundred forty-five thousand, five hundred eleven".