989218 has 4 divisors (see below), whose sum is σ = 1483830. Its totient is φ = 494608.

The previous prime is 989173. The next prime is 989231. The reversal of 989218 is 812989.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 522729 + 466489 = 723^2 + 683^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

989218 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247303 + ... + 247306.

2⁹⁸⁹²¹⁸ is an apocalyptic number.

989218 is a deficient number, since it is larger than the sum of its proper divisors (494612).

989218 is a wasteful number, since it uses less digits than its factorization.

989218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494611.

The product of its digits is 10368, while the sum is 37.

The square root of 989218 is about 994.5943896886. The cubic root of 989218 is about 99.6393005232.

It can be divided in two parts, 98 and 9218, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 989218 in words is "nine hundred eighty-nine thousand, two hundred eighteen".