3945001 has 4 divisors (see below), whose sum is σ = 3976192. Its totient is φ = 3913812.

The previous prime is 3944999. The next prime is 3945013. The reversal of 3945001 is 1005493.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3945001 - 2¹ = 3944999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3945031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15405 + ... + 15658.

It is an arithmetic number, because the mean of its divisors is an integer number (994048).

Almost surely, 2^3945001 is an apocalyptic number.

It is an amenable number.

3945001 is a deficient number, since it is larger than the sum of its proper divisors (31191).

3945001 is a wasteful number, since it uses less digits than its factorization.

3945001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31190.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 3945001 is about 1986.2026583408. The cubic root of 3945001 is about 158.0091993789.

The spelling of 3945001 in words is "three million, nine hundred forty-five thousand, one".