9979860167 has 2 divisors, whose sum is σ = 9979860168. Its totient is φ = 9979860166.

The previous prime is 9979860133. The next prime is 9979860173. The reversal of 9979860167 is 7610689799.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9979860167 - 2¹⁸ = 9979598023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9979860367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4989930083 + 4989930084.

It is an arithmetic number, because the mean of its divisors is an integer number (4989930084).

Almost surely, 2^9979860167 is an apocalyptic number.

9979860167 is a deficient number, since it is larger than the sum of its proper divisors (1).

9979860167 is an equidigital number, since it uses as much as digits as its factorization.

9979860167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10287648, while the sum is 62.

The square root of 9979860167 is about 99899.2500822704. The cubic root of 9979860167 is about 2152.9873861524.

The spelling of 9979860167 in words is "nine billion, nine hundred seventy-nine million, eight hundred sixty thousand, one hundred sixty-seven".