9913943207 has 16 divisors (see below), whose sum is σ = 12142382592. Its totient is φ = 7908516000.

The previous prime is 9913943197. The next prime is 9913943209. The reversal of 9913943207 is 7023493199.

It is a happy number.

It is not a de Polignac number, because 9913943207 - 2²⁰ = 9912894631 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9913943209) 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, 826169 + ... + 838082.

It is an arithmetic number, because the mean of its divisors is an integer number (758898912).

Almost surely, 2^9913943207 is an apocalyptic number.

9913943207 is a deficient number, since it is larger than the sum of its proper divisors (2228439385).

9913943207 is a wasteful number, since it uses less digits than its factorization.

9913943207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664318.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 9913943207 is about 99568.7863087624. The cubic root of 9913943207 is about 2148.2367520572.

The spelling of 9913943207 in words is "nine billion, nine hundred thirteen million, nine hundred forty-three thousand, two hundred seven".