84739398397 has 4 divisors (see below), whose sum is σ = 85052090176. Its totient is φ = 84426706620.

The previous prime is 84739398391. The next prime is 84739398413. The reversal of 84739398397 is 79389393748.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84739398397 - 2¹⁵ = 84739365629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84739398391) 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, 156345483 + ... + 156346024.

It is an arithmetic number, because the mean of its divisors is an integer number (21263022544).

Almost surely, 2^84739398397 is an apocalyptic number.

It is an amenable number.

84739398397 is a deficient number, since it is larger than the sum of its proper divisors (312691779).

84739398397 is a wasteful number, since it uses less digits than its factorization.

84739398397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312691778.

The product of its digits is 246903552, while the sum is 70.

The spelling of 84739398397 in words is "eighty-four billion, seven hundred thirty-nine million, three hundred ninety-eight thousand, three hundred ninety-seven".