959909959 has 4 divisors (see below), whose sum is σ = 969414120. Its totient is φ = 950405800.

The previous prime is 959909927. The next prime is 959909987.

It is a happy number.

959909959 is nontrivially palindromic in base 10.

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 959909959 - 2⁵ = 959909927 is a prime.

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 959909959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (959909459) 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, 4751929 + ... + 4752130.

It is an arithmetic number, because the mean of its divisors is an integer number (242353530).

Almost surely, 2^959909959 is an apocalyptic number.

959909959 is a deficient number, since it is larger than the sum of its proper divisors (9504161).

959909959 is a wasteful number, since it uses less digits than its factorization.

959909959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9504160.

The product of its (nonzero) digits is 13286025, while the sum is 64.

The square root of 959909959 is about 30982.4137051973. The cubic root of 959909959 is about 986.4539870733.

The spelling of 959909959 in words is "nine hundred fifty-nine million, nine hundred nine thousand, nine hundred fifty-nine".