989047 has 4 divisors (see below), whose sum is σ = 1015816. Its totient is φ = 962280.

The previous prime is 989029. The next prime is 989059. The reversal of 989047 is 740989.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-989047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 26731 = 989047 / (9 + 8 + 9 + 0 + 4 + 7).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 988997 and 989015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989347) 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, 13329 + ... + 13402.

It is an arithmetic number, because the mean of its divisors is an integer number (253954).

2⁹⁸⁹⁰⁴⁷ is an apocalyptic number.

989047 is a deficient number, since it is larger than the sum of its proper divisors (26769).

989047 is a wasteful number, since it uses less digits than its factorization.

989047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26768.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 989047 is about 994.5084212816. The cubic root of 989047 is about 99.6335588490.

The spelling of 989047 in words is "nine hundred eighty-nine thousand, forty-seven".