9939520167 has 4 divisors (see below), whose sum is σ = 13252693560. Its totient is φ = 6626346776.

The previous prime is 9939520139. The next prime is 9939520189. The reversal of 9939520167 is 7610259399.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7610259399 = 3 ⋅2536753133.

It is a cyclic number.

It is not a de Polignac number, because 9939520167 - 2¹⁰ = 9939519143 is a prime.

It is a super-2 number, since 2×9939520167² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9939520867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1656586692 + ... + 1656586697.

It is an arithmetic number, because the mean of its divisors is an integer number (3313173390).

Almost surely, 2^9939520167 is an apocalyptic number.

9939520167 is a deficient number, since it is larger than the sum of its proper divisors (3313173393).

9939520167 is a wasteful number, since it uses less digits than its factorization.

9939520167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3313173392.

The product of its (nonzero) digits is 918540, while the sum is 51.

The square root of 9939520167 is about 99697.1422208280. The cubic root of 9939520167 is about 2150.0825760244.

The spelling of 9939520167 in words is "nine billion, nine hundred thirty-nine million, five hundred twenty thousand, one hundred sixty-seven".