73161979 has 8 divisors (see below), whose sum is σ = 80824320. Its totient is φ = 65668200.

The previous prime is 73161967. The next prime is 73162007. The reversal of 73161979 is 97916137.

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 73161979 - 2¹⁷ = 73030907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73161079) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41227 + ... + 42964.

It is an arithmetic number, because the mean of its divisors is an integer number (10103040).

Almost surely, 2^73161979 is an apocalyptic number.

73161979 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

73161979 is a deficient number, since it is larger than the sum of its proper divisors (7662341).

73161979 is a wasteful number, since it uses less digits than its factorization.

73161979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84281.

The product of its digits is 71442, while the sum is 43.

The square root of 73161979 is about 8553.4775968608. The cubic root of 73161979 is about 418.2428078099.

The spelling of 73161979 in words is "seventy-three million, one hundred sixty-one thousand, nine hundred seventy-nine".