989437 has 4 divisors (see below), whose sum is σ = 1032480. Its totient is φ = 946396.

The previous prime is 989423. The next prime is 989441. The reversal of 989437 is 734989.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 734989 = 61 ⋅12049.

It is a cyclic number.

It is not a de Polignac number, because 989437 - 2⁷ = 989309 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 989437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21487 + ... + 21532.

It is an arithmetic number, because the mean of its divisors is an integer number (258120).

2⁹⁸⁹⁴³⁷ is an apocalyptic number.

It is an amenable number.

989437 is a deficient number, since it is larger than the sum of its proper divisors (43043).

989437 is a wasteful number, since it uses less digits than its factorization.

989437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43042.

The product of its digits is 54432, while the sum is 40.

The square root of 989437 is about 994.7044787272. The cubic root of 989437 is about 99.6466529290.

The spelling of 989437 in words is "nine hundred eighty-nine thousand, four hundred thirty-seven".