959440639 has 8 divisors (see below), whose sum is σ = 982243152. Its totient is φ = 936660480.

The previous prime is 959440579. The next prime is 959440649. The reversal of 959440639 is 936044959.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-959440639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 959440592 and 959440601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (959440649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108447 + ... + 116959.

It is an arithmetic number, because the mean of its divisors is an integer number (122780394).

Almost surely, 2^959440639 is an apocalyptic number.

959440639 is a deficient number, since it is larger than the sum of its proper divisors (22802513).

959440639 is a wasteful number, since it uses less digits than its factorization.

959440639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11177.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The square root of 959440639 is about 30974.8388050689. The cubic root of 959440639 is about 986.2931948892.

The spelling of 959440639 in words is "nine hundred fifty-nine million, four hundred forty thousand, six hundred thirty-nine".