79488471969 has 9 divisors (see below), whose sum is σ = 114817903473. Its totient is φ = 52991750772.

The previous prime is 79488471961. The next prime is 79488471989. The reversal of 79488471969 is 96917488497.

The square root of 79488471969 is 281937.

It is a perfect power (a square), and thus also a powerful number.

79488471969 is a `hidden beast` number, since 7 + 94 + 8 + 8 + 471 + 9 + 69 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 79488471969 - 2³ = 79488471961 is a prime.

It is a super-2 number, since 2×79488471969² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 79488471897 and 79488471906.

It is not an unprimeable number, because it can be changed into a prime (79488471961) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 798822 + ... + 892800.

Almost surely, 2^79488471969 is an apocalyptic number.

79488471969 is the 281937-th square number.

79488471969 is the 140969-th centered octagonal number.

It is an amenable number.

79488471969 is a deficient number, since it is larger than the sum of its proper divisors (35329431504).

79488471969 is an frugal number, since it uses more digits than its factorization.

79488471969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187964 (or 93982 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 72.

The spelling of 79488471969 in words is "seventy-nine billion, four hundred eighty-eight million, four hundred seventy-one thousand, nine hundred sixty-nine".