163879939 has 8 divisors (see below), whose sum is σ = 165201120. Its totient is φ = 162563136.

The previous prime is 163879927. The next prime is 163879951. The reversal of 163879939 is 939978361.

It is an interprime number because it is at equal distance from previous prime (163879927) and next prime (163879951).

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

It is a cyclic number.

It is not a de Polignac number, because 163879939 - 2¹¹ = 163877891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163879939.

It is not an unprimeable number, because it can be changed into a prime (163879039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134497 + ... + 135709.

It is an arithmetic number, because the mean of its divisors is an integer number (20650140).

Almost surely, 2^163879939 is an apocalyptic number.

163879939 is a deficient number, since it is larger than the sum of its proper divisors (1321181).

163879939 is a wasteful number, since it uses less digits than its factorization.

163879939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189.

The product of its digits is 2204496, while the sum is 55.

The square root of 163879939 is about 12801.5600221223. The cubic root of 163879939 is about 547.2367620386.

The spelling of 163879939 in words is "one hundred sixty-three million, eight hundred seventy-nine thousand, nine hundred thirty-nine".