985279 has 2 divisors, whose sum is σ = 985280. Its totient is φ = 985278.

The previous prime is 985277. The next prime is 985291. The reversal of 985279 is 972589.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 985279 - 2¹ = 985277 is a prime.

Together with 985277, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492639 + 492640.

It is an arithmetic number, because the mean of its divisors is an integer number (492640).

2⁹⁸⁵²⁷⁹ is an apocalyptic number.

985279 is a deficient number, since it is larger than the sum of its proper divisors (1).

985279 is an equidigital number, since it uses as much as digits as its factorization.

985279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 40.

The square root of 985279 is about 992.6122102815. The cubic root of 985279 is about 99.5068722474.

The spelling of 985279 in words is "nine hundred eighty-five thousand, two hundred seventy-nine".