3921001 has 8 divisors (see below), whose sum is σ = 4602560. Its totient is φ = 3269808.

The previous prime is 3920989. The next prime is 3921023. The reversal of 3921001 is 1001293.

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 3921001 - 2¹³ = 3912809 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3921301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7311 + ... + 7828.

It is an arithmetic number, because the mean of its divisors is an integer number (575320).

Almost surely, 2^3921001 is an apocalyptic number.

It is an amenable number.

3921001 is a deficient number, since it is larger than the sum of its proper divisors (681559).

3921001 is a wasteful number, since it uses less digits than its factorization.

3921001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15183.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 3921001 is about 1980.1517618607. The cubic root of 3921001 is about 157.6881232404.

Adding to 3921001 its reverse (1001293), we get a palindrome (4922294).

The spelling of 3921001 in words is "three million, nine hundred twenty-one thousand, one".