3960905 has 8 divisors (see below), whose sum is σ = 5118792. Its totient is φ = 2924928.

The previous prime is 3960893. The next prime is 3960937. The reversal of 3960905 is 5090693.

It can be written as a sum of positive squares in 4 ways, for example, as 24649 + 3936256 = 157^2 + 1984^2 .

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 3960905 - 2⁴ = 3960889 is a prime.

It is a Duffinian 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, 30404 + ... + 30533.

It is an arithmetic number, because the mean of its divisors is an integer number (639849).

Almost surely, 2^3960905 is an apocalyptic number.

It is an amenable number.

3960905 is a deficient number, since it is larger than the sum of its proper divisors (1157887).

3960905 is a wasteful number, since it uses less digits than its factorization.

3960905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60955.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 3960905 is about 1990.2022510288. The cubic root of 3960905 is about 158.2212490830.

The spelling of 3960905 in words is "three million, nine hundred sixty thousand, nine hundred five".