9959042026 has 16 divisors (see below), whose sum is σ = 15351563304. Its totient is φ = 4842016704.

The previous prime is 9959041993. The next prime is 9959042029. The reversal of 9959042026 is 6202409599.

It is a Cunningham number, because it is equal to 99795²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 9959042025 + 1 = 99795^2 + 1^2 .

It is not an unprimeable number, because it can be changed into a prime (9959042029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85536 + ... + 165028.

Almost surely, 2^9959042026 is an apocalyptic number.

9959042026 is a deficient number, since it is larger than the sum of its proper divisors (5392521278).

9959042026 is a wasteful number, since it uses less digits than its factorization.

9959042026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81225.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 9959042026 is about 99795.0000050103. Note that the first 5 decimals coincide. The cubic root of 9959042026 is about 2151.4892891085.

The spelling of 9959042026 in words is "nine billion, nine hundred fifty-nine million, forty-two thousand, twenty-six".