989426 has 4 divisors (see below), whose sum is σ = 1484142. Its totient is φ = 494712.

The previous prime is 989423. The next prime is 989441. The reversal of 989426 is 624989.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 624989 = 151 ⋅4139.

It can be written as a sum of positive squares in only one way, i.e., 724201 + 265225 = 851^2 + 515^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 989426.

It is not an unprimeable number, because it can be changed into a prime (989423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247355 + ... + 247358.

2⁹⁸⁹⁴²⁶ is an apocalyptic number.

989426 is a deficient number, since it is larger than the sum of its proper divisors (494716).

989426 is a wasteful number, since it uses less digits than its factorization.

989426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494715.

The product of its digits is 31104, while the sum is 38.

The square root of 989426 is about 994.6989494314. The cubic root of 989426 is about 99.6462836560.

The spelling of 989426 in words is "nine hundred eighty-nine thousand, four hundred twenty-six".