9943162647 has 16 divisors (see below), whose sum is σ = 14482076160. Its totient is φ = 6018120000.

The previous prime is 9943162643. The next prime is 9943162661. The reversal of 9943162647 is 7462613499.

It is a happy number.

It is not a de Polignac number, because 9943162647 - 2² = 9943162643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9943162647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9943162643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175822 + ... + 225387.

It is an arithmetic number, because the mean of its divisors is an integer number (905129760).

Almost surely, 2^9943162647 is an apocalyptic number.

9943162647 is a deficient number, since it is larger than the sum of its proper divisors (4538913513).

9943162647 is a wasteful number, since it uses less digits than its factorization.

9943162647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401974.

The product of its digits is 1959552, while the sum is 51.

The square root of 9943162647 is about 99715.4082727439. The cubic root of 9943162647 is about 2150.3451868337.

The spelling of 9943162647 in words is "nine billion, nine hundred forty-three million, one hundred sixty-two thousand, six hundred forty-seven".