1711989 has 16 divisors (see below), whose sum is σ = 2558400. Its totient is φ = 1131408.

The previous prime is 1711981. The next prime is 1711993. The reversal of 1711989 is 9891171.

It is not a de Polignac number, because 1711989 - 2³ = 1711981 is a prime.

It is a super-2 number, since 2×1711989² = 5861812672242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1711981) 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 15 ways as a sum of consecutive naturals, for example, 4207 + ... + 4595.

It is an arithmetic number, because the mean of its divisors is an integer number (159900).

2^1711989 is an apocalyptic number.

It is an amenable number.

1711989 is a deficient number, since it is larger than the sum of its proper divisors (846411).

1711989 is a wasteful number, since it uses less digits than its factorization.

1711989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 555 counting only the distinct ones).

The product of its digits is 4536, while the sum is 36.

The square root of 1711989 is about 1308.4299751993. The cubic root of 1711989 is about 119.6282243802.

The spelling of 1711989 in words is "one million, seven hundred eleven thousand, nine hundred eighty-nine".