3965001 has 8 divisors (see below), whose sum is σ = 5307264. Its totient is φ = 2633040.

The previous prime is 3964973. The next prime is 3965021. The reversal of 3965001 is 1005693.

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

It is not a de Polignac number, because 3965001 - 2⁶ = 3964937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3965021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1626 + ... + 3251.

It is an arithmetic number, because the mean of its divisors is an integer number (663408).

Almost surely, 2^3965001 is an apocalyptic number.

3965001 is the 1626-th pentagonal number.

It is an amenable number.

3965001 is a deficient number, since it is larger than the sum of its proper divisors (1342263).

3965001 is a wasteful number, since it uses less digits than its factorization.

3965001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5151.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 3965001 is about 1991.2310262750. The cubic root of 3965001 is about 158.2757695332.

The spelling of 3965001 in words is "three million, nine hundred sixty-five thousand, one".