3961905 has 8 divisors (see below), whose sum is σ = 6339072. Its totient is φ = 2113008.

The previous prime is 3961897. The next prime is 3961907. The reversal of 3961905 is 5091693.

3961905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3961905 - 2³ = 3961897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3961907) 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 7 ways as a sum of consecutive naturals, for example, 132049 + ... + 132078.

It is an arithmetic number, because the mean of its divisors is an integer number (792384).

Almost surely, 2^3961905 is an apocalyptic number.

It is an amenable number.

3961905 is a deficient number, since it is larger than the sum of its proper divisors (2377167).

3961905 is a wasteful number, since it uses less digits than its factorization.

3961905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264135.

The product of its (nonzero) digits is 7290, while the sum is 33.

The square root of 3961905 is about 1990.4534659218. The cubic root of 3961905 is about 158.2345632065.

The spelling of 3961905 in words is "three million, nine hundred sixty-one thousand, nine hundred five".