858688937397 has 6 divisors (see below), whose sum is σ = 1240328465142. Its totient is φ = 572459291592.

The previous prime is 858688937383. The next prime is 858688937413. The reversal of 858688937397 is 793739886858.

858688937397 is a `hidden beast` number, since 8 + 5 + 86 + 8 + 89 + 373 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 756806042916 + 101882894481 = 869946^2 + 319191^2 .

It is not a de Polignac number, because 858688937397 - 2¹⁰ = 858688936373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858688937497) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47704940958 + ... + 47704940975.

It is an arithmetic number, because the mean of its divisors is an integer number (206721410857).

Almost surely, 2^858688937397 is an apocalyptic number.

It is an amenable number.

858688937397 is a deficient number, since it is larger than the sum of its proper divisors (381639527745).

858688937397 is a wasteful number, since it uses less digits than its factorization.

858688937397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95409881939 (or 95409881936 counting only the distinct ones).

The product of its digits is 4389396480, while the sum is 81.

The spelling of 858688937397 in words is "eight hundred fifty-eight billion, six hundred eighty-eight million, nine hundred thirty-seven thousand, three hundred ninety-seven".