3963945 has 8 divisors (see below), whose sum is σ = 6342336. Its totient is φ = 2114096.

The previous prime is 3963931. The next prime is 3963959. The reversal of 3963945 is 5493693.

It is an interprime number because it is at equal distance from previous prime (3963931) and next prime (3963959).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3963945 - 2¹¹ = 3961897 is a prime.

It is a Curzon number.

3963945 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132117 + ... + 132146.

It is an arithmetic number, because the mean of its divisors is an integer number (792792).

Almost surely, 2^3963945 is an apocalyptic number.

It is an amenable number.

3963945 is a deficient number, since it is larger than the sum of its proper divisors (2378391).

3963945 is a wasteful number, since it uses less digits than its factorization.

3963945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264271.

The product of its digits is 87480, while the sum is 39.

The square root of 3963945 is about 1990.9658460154. The cubic root of 3963945 is about 158.2617170733.

The spelling of 3963945 in words is "three million, nine hundred sixty-three thousand, nine hundred forty-five".