988538 has 4 divisors (see below), whose sum is σ = 1482810. Its totient is φ = 494268.

The previous prime is 988511. The next prime is 988541. The reversal of 988538 is 835889.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 835889 = 23 ⋅36343.

It can be written as a sum of positive squares in only one way, i.e., 779689 + 208849 = 883^2 + 457^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 988495 and 988504.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 988538.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247133 + ... + 247136.

2⁹⁸⁸⁵³⁸ is an apocalyptic number.

988538 is a deficient number, since it is larger than the sum of its proper divisors (494272).

988538 is a wasteful number, since it uses less digits than its factorization.

988538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494271.

The product of its digits is 69120, while the sum is 41.

The square root of 988538 is about 994.2524830243. The cubic root of 988538 is about 99.6164642170.

The spelling of 988538 in words is "nine hundred eighty-eight thousand, five hundred thirty-eight".