3116989 has 4 divisors (see below), whose sum is σ = 3125020. Its totient is φ = 3108960.

The previous prime is 3116977. The next prime is 3116999. The reversal of 3116989 is 9896113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9896113 = 1777 ⋅5569.

It can be written as a sum of positive squares in 2 ways, for example, as 2805625 + 311364 = 1675^2 + 558^2 .

It is a cyclic number.

It is not a de Polignac number, because 3116989 - 2¹³ = 3108797 is a prime.

It is a super-2 number, since 2×3116989² = 19431240852242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3116959) 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, 3402 + ... + 4219.

It is an arithmetic number, because the mean of its divisors is an integer number (781255).

Almost surely, 2^3116989 is an apocalyptic number.

It is an amenable number.

3116989 is a deficient number, since it is larger than the sum of its proper divisors (8031).

3116989 is an equidigital number, since it uses as much as digits as its factorization.

3116989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8030.

The product of its digits is 11664, while the sum is 37.

The square root of 3116989 is about 1765.4996459926. The cubic root of 3116989 is about 146.0758503726.

It can be divided in two parts, 31 and 16989, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 3116989 in words is "three million, one hundred sixteen thousand, nine hundred eighty-nine".