2717989 has 8 divisors (see below), whose sum is σ = 2790720. Its totient is φ = 2646336.

The previous prime is 2717929. The next prime is 2717993. The reversal of 2717989 is 9897172.

It is a happy number.

2717989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2717989 - 2¹³ = 2709797 is a prime.

It is a Duffinian number.

2717989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2717929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7392 + ... + 7750.

It is an arithmetic number, because the mean of its divisors is an integer number (348840).

2^2717989 is an apocalyptic number.

It is an amenable number.

2717989 is a deficient number, since it is larger than the sum of its proper divisors (72731).

2717989 is a wasteful number, since it uses less digits than its factorization.

2717989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539.

The product of its digits is 63504, while the sum is 43.

The square root of 2717989 is about 1648.6324635891. The cubic root of 2717989 is about 139.5562308905.

Subtracting from 2717989 its sum of digits (43), we obtain a triangular number (2717946 = T₂₃₃₁).

The spelling of 2717989 in words is "two million, seven hundred seventeen thousand, nine hundred eighty-nine".