988489 has 2 divisors, whose sum is σ = 988490. Its totient is φ = 988488.

The previous prime is 988483. The next prime is 988501. The reversal of 988489 is 984889.

988489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824464 + 164025 = 908^2 + 405^2 .

It is a cyclic number.

It is not a de Polignac number, because 988489 - 2¹⁹ = 464201 is a prime.

It is a super-2 number, since 2×988489² = 1954221006242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (988483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494244 + 494245.

It is an arithmetic number, because the mean of its divisors is an integer number (494245).

2⁹⁸⁸⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

988489 is a deficient number, since it is larger than the sum of its proper divisors (1).

988489 is an equidigital number, since it uses as much as digits as its factorization.

988489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 46.

The square root of 988489 is about 994.2278410908. The cubic root of 988489 is about 99.6148182552.

Subtracting from 988489 its reverse (984889), we obtain a square (3600 = 60²).

The spelling of 988489 in words is "nine hundred eighty-eight thousand, four hundred eighty-nine".