3143989 has 4 divisors (see below), whose sum is σ = 3245440. Its totient is φ = 3042540.

The previous prime is 3143969. The next prime is 3143993. The reversal of 3143989 is 9893413.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9893413 = 233 ⋅42461.

It is a cyclic number.

It is not a de Polignac number, because 3143989 - 2⁹ = 3143477 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 (3143969) 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, 50679 + ... + 50740.

It is an arithmetic number, because the mean of its divisors is an integer number (811360).

Almost surely, 2^3143989 is an apocalyptic number.

It is an amenable number.

3143989 is a deficient number, since it is larger than the sum of its proper divisors (101451).

3143989 is a wasteful number, since it uses less digits than its factorization.

3143989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101450.

The product of its digits is 23328, while the sum is 37.

The square root of 3143989 is about 1773.1297188869. The cubic root of 3143989 is about 146.4964180419.

The spelling of 3143989 in words is "three million, one hundred forty-three thousand, nine hundred eighty-nine".