3948705 has 24 divisors (see below), whose sum is σ = 6993792. Its totient is φ = 2060064.

The previous prime is 3948701. The next prime is 3948719. The reversal of 3948705 is 5078493.

It is not a de Polignac number, because 3948705 - 2² = 3948701 is a prime.

It is a Curzon number.

3948705 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3948705.

It is not an unprimeable number, because it can be changed into a prime (3948701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1182 + ... + 3048.

It is an arithmetic number, because the mean of its divisors is an integer number (291408).

Almost surely, 2^3948705 is an apocalyptic number.

It is an amenable number.

3948705 is a deficient number, since it is larger than the sum of its proper divisors (3045087).

3948705 is a wasteful number, since it uses less digits than its factorization.

3948705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925 (or 1922 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 3948705 is about 1987.1348721212. The cubic root of 3948705 is about 158.0586360372.

The spelling of 3948705 in words is "three million, nine hundred forty-eight thousand, seven hundred five".