989290 has 8 divisors (see below), whose sum is σ = 1780740. Its totient is φ = 395712.

The previous prime is 989279. The next prime is 989293. The reversal of 989290 is 92989.

989290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 915849 + 73441 = 957^2 + 271^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

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

It is not an unprimeable number, because it can be changed into a prime (989293) 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, 49455 + ... + 49474.

2⁹⁸⁹²⁹⁰ is an apocalyptic number.

989290 is a deficient number, since it is larger than the sum of its proper divisors (791450).

989290 is a wasteful number, since it uses less digits than its factorization.

989290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98936.

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

The square root of 989290 is about 994.6305846896. The cubic root of 989290 is about 99.6417178722.

The spelling of 989290 in words is "nine hundred eighty-nine thousand, two hundred ninety".