79487161 has 4 divisors (see below), whose sum is σ = 85601572. Its totient is φ = 73372752.

The previous prime is 79487153. The next prime is 79487171. The reversal of 79487161 is 16178497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16178497 = 31 ⋅521887.

It can be written as a sum of positive squares in 2 ways, for example, as 35331136 + 44156025 = 5944^2 + 6645^2 .

It is a cyclic number.

It is not a de Polignac number, because 79487161 - 2³ = 79487153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79487171) 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, 3057186 + ... + 3057211.

It is an arithmetic number, because the mean of its divisors is an integer number (21400393).

Almost surely, 2^79487161 is an apocalyptic number.

It is an amenable number.

79487161 is a deficient number, since it is larger than the sum of its proper divisors (6114411).

79487161 is a wasteful number, since it uses less digits than its factorization.

79487161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6114410.

The product of its digits is 84672, while the sum is 43.

The square root of 79487161 is about 8915.5572456241. The cubic root of 79487161 is about 429.9642317463.

The spelling of 79487161 in words is "seventy-nine million, four hundred eighty-seven thousand, one hundred sixty-one".