9951439166 has 8 divisors (see below), whose sum is σ = 14961793824. Its totient is φ = 4964174560.

The previous prime is 9951439111. The next prime is 9951439207. The reversal of 9951439166 is 6619341599.

It is a happy number.

9951439166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×9951439166² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 5771435 + ... + 5773158.

It is an arithmetic number, because the mean of its divisors is an integer number (1870224228).

Almost surely, 2^9951439166 is an apocalyptic number.

9951439166 is a deficient number, since it is larger than the sum of its proper divisors (5010354658).

9951439166 is a wasteful number, since it uses less digits than its factorization.

9951439166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11545026.

The product of its digits is 1574640, while the sum is 53.

The square root of 9951439166 is about 99756.9003427833. The cubic root of 9951439166 is about 2150.9416582527.

The spelling of 9951439166 in words is "nine billion, nine hundred fifty-one million, four hundred thirty-nine thousand, one hundred sixty-six".