989435 has 4 divisors (see below), whose sum is σ = 1187328. Its totient is φ = 791544.

The previous prime is 989423. The next prime is 989441. The reversal of 989435 is 534989.

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

It is a cyclic number.

It is not a de Polignac number, because 989435 - 2⁴ = 989419 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 98939 + ... + 98948.

It is an arithmetic number, because the mean of its divisors is an integer number (296832).

2⁹⁸⁹⁴³⁵ is an apocalyptic number.

989435 is a deficient number, since it is larger than the sum of its proper divisors (197893).

989435 is a wasteful number, since it uses less digits than its factorization.

989435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197892.

The product of its digits is 38880, while the sum is 38.

The square root of 989435 is about 994.7034734030. The cubic root of 989435 is about 99.6465857887.

The spelling of 989435 in words is "nine hundred eighty-nine thousand, four hundred thirty-five".