959999 has 4 divisors (see below), whose sum is σ = 962136. Its totient is φ = 957864.

The previous prime is 959969. The next prime is 960017. The reversal of 959999 is 999959.

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-959999 is a prime.

It is a Duffinian number.

959999 is a modest number, since divided by 999 gives 959 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (959969) 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, 104 + ... + 1389.

It is an arithmetic number, because the mean of its divisors is an integer number (240534).

2⁹⁵⁹⁹⁹⁹ is an apocalyptic number.

959999 is a deficient number, since it is larger than the sum of its proper divisors (2137).

959999 is a wasteful number, since it uses less digits than its factorization.

959999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136.

The product of its digits is 295245, while the sum is 50.

The square root of 959999 is about 979.7953868028. The cubic root of 959999 is about 98.6484487203.

The spelling of 959999 in words is "nine hundred fifty-nine thousand, nine hundred ninety-nine".