3946545 has 12 divisors (see below), whose sum is σ = 6840756. Its totient is φ = 2104800.

The previous prime is 3946541. The next prime is 3946549. The reversal of 3946545 is 5456493.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3946541) and next prime (3946549).

It can be written as a sum of positive squares in 2 ways, for example, as 2862864 + 1083681 = 1692^2 + 1041^2 .

It is not a de Polignac number, because 3946545 - 2² = 3946541 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3946541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43806 + ... + 43895.

It is an arithmetic number, because the mean of its divisors is an integer number (570063).

Almost surely, 2^3946545 is an apocalyptic number.

It is an amenable number.

3946545 is a deficient number, since it is larger than the sum of its proper divisors (2894211).

3946545 is a wasteful number, since it uses less digits than its factorization.

3946545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87712 (or 87709 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 3946545 is about 1986.5913017025. The cubic root of 3946545 is about 158.0298106439.

The spelling of 3946545 in words is "three million, nine hundred forty-six thousand, five hundred forty-five".