988418 has 18 divisors (see below), whose sum is σ = 1608201. Its totient is φ = 455544.

The previous prime is 988417. The next prime is 988439. The reversal of 988418 is 814889.

It can be written as a sum of positive squares in 2 ways, for example, as 797449 + 190969 = 893^2 + 437^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=703.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (988417) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 26696 + ... + 26732.

2⁹⁸⁸⁴¹⁸ is an apocalyptic number.

988418 is a deficient number, since it is larger than the sum of its proper divisors (619783).

988418 is a wasteful number, since it uses less digits than its factorization.

988418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 58 counting only the distinct ones).

The product of its digits is 18432, while the sum is 38.

The square root of 988418 is about 994.1921343483. The cubic root of 988418 is about 99.6124331936.

Multiplying 988418 by its product of digits (18432), we get a square (18218520576 = 134976²).

The spelling of 988418 in words is "nine hundred eighty-eight thousand, four hundred eighteen".