3905001 has 6 divisors (see below), whose sum is σ = 5640570. Its totient is φ = 2603328.

The previous prime is 3904997. The next prime is 3905003. The reversal of 3905001 is 1005093.

It can be written as a sum of positive squares in only one way, i.e., 3515625 + 389376 = 1875^2 + 624^2 .

It is not a de Polignac number, because 3905001 - 2² = 3904997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3905003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 216936 + ... + 216953.

It is an arithmetic number, because the mean of its divisors is an integer number (940095).

Almost surely, 2^3905001 is an apocalyptic number.

It is an amenable number.

3905001 is a deficient number, since it is larger than the sum of its proper divisors (1735569).

3905001 is a wasteful number, since it uses less digits than its factorization.

3905001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433895 (or 433892 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 3905001 is about 1976.1075375596. The cubic root of 3905001 is about 157.4733439393.

The spelling of 3905001 in words is "three million, nine hundred five thousand, one".