3963405 has 16 divisors (see below), whose sum is σ = 6393024. Its totient is φ = 2096640.

The previous prime is 3963391. The next prime is 3963409. The reversal of 3963405 is 5043693.

It is a happy number.

It is not a de Polignac number, because 3963405 - 2⁵ = 3963373 is a prime.

3963405 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3963409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957 + ... + 2973.

It is an arithmetic number, because the mean of its divisors is an integer number (399564).

Almost surely, 2^3963405 is an apocalyptic number.

It is an amenable number.

3963405 is a deficient number, since it is larger than the sum of its proper divisors (2429619).

3963405 is a wasteful number, since it uses less digits than its factorization.

3963405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 3963405 is about 1990.8302288241. The cubic root of 3963405 is about 158.2545301918.

The spelling of 3963405 in words is "three million, nine hundred sixty-three thousand, four hundred five".