959991607 has 4 divisors (see below), whose sum is σ = 961253856. Its totient is φ = 958729360.

The previous prime is 959991583. The next prime is 959991623. The reversal of 959991607 is 706199959.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 706199959 = 89 ⋅7934831.

It is a cyclic number.

It is not a de Polignac number, because 959991607 - 2¹¹ = 959989559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (959491607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 629983 + ... + 631504.

It is an arithmetic number, because the mean of its divisors is an integer number (240313464).

Almost surely, 2^959991607 is an apocalyptic number.

959991607 is a deficient number, since it is larger than the sum of its proper divisors (1262249).

959991607 is a wasteful number, since it uses less digits than its factorization.

959991607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262248.

The product of its (nonzero) digits is 1377810, while the sum is 55.

The square root of 959991607 is about 30983.7313279082. The cubic root of 959991607 is about 986.4819548741.

The spelling of 959991607 in words is "nine hundred fifty-nine million, nine hundred ninety-one thousand, six hundred seven".