79389723897 has 12 divisors (see below), whose sum is σ = 125098959024. Its totient is φ = 48114984120.

The previous prime is 79389723871. The next prime is 79389723901. The reversal of 79389723897 is 79832798397.

79389723897 is a `hidden beast` number, since 7 + 9 + 389 + 7 + 238 + 9 + 7 = 666.

It is not a de Polignac number, because 79389723897 - 2¹⁴ = 79389707513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79389723197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 400958103 + ... + 400958300.

It is an arithmetic number, because the mean of its divisors is an integer number (10424913252).

Almost surely, 2^79389723897 is an apocalyptic number.

It is an amenable number.

79389723897 is a deficient number, since it is larger than the sum of its proper divisors (45709235127).

79389723897 is a wasteful number, since it uses less digits than its factorization.

79389723897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801916420 (or 801916417 counting only the distinct ones).

The product of its digits is 288054144, while the sum is 72.

The spelling of 79389723897 in words is "seventy-nine billion, three hundred eighty-nine million, seven hundred twenty-three thousand, eight hundred ninety-seven".