3189921 has 8 divisors (see below), whose sum is σ = 4860864. Its totient is φ = 1822800.

The previous prime is 3189899. The next prime is 3189943. The reversal of 3189921 is 1299813.

It is an interprime number because it is at equal distance from previous prime (3189899) and next prime (3189943).

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

It is not a de Polignac number, because 3189921 - 2⁵ = 3189889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3189961) 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, 75930 + ... + 75971.

It is an arithmetic number, because the mean of its divisors is an integer number (607608).

Almost surely, 2^3189921 is an apocalyptic number.

It is an amenable number.

3189921 is a deficient number, since it is larger than the sum of its proper divisors (1670943).

3189921 is a wasteful number, since it uses less digits than its factorization.

3189921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151911.

The product of its digits is 3888, while the sum is 33.

The square root of 3189921 is about 1786.0349940581. The cubic root of 3189921 is about 147.2063832544.

The spelling of 3189921 in words is "three million, one hundred eighty-nine thousand, nine hundred twenty-one".