989217 has 6 divisors (see below), whose sum is σ = 1428882. Its totient is φ = 659472.

The previous prime is 989173. The next prime is 989231. The reversal of 989217 is 712989.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 767376 + 221841 = 876^2 + 471^2 .

It is not a de Polignac number, because 989217 - 2¹² = 985121 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 989217.

It is not an unprimeable number, because it can be changed into a prime (989917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54948 + ... + 54965.

It is an arithmetic number, because the mean of its divisors is an integer number (238147).

2⁹⁸⁹²¹⁷ is an apocalyptic number.

It is an amenable number.

989217 is a deficient number, since it is larger than the sum of its proper divisors (439665).

989217 is a wasteful number, since it uses less digits than its factorization.

989217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109919 (or 109916 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 989217 is about 994.5938869710. The cubic root of 989217 is about 99.6392669480.

The spelling of 989217 in words is "nine hundred eighty-nine thousand, two hundred seventeen".