8937117397 has 4 divisors (see below), whose sum is σ = 9624587980. Its totient is φ = 8249646816.

The previous prime is 8937117373. The next prime is 8937117437. The reversal of 8937117397 is 7937117398.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3509259121 + 5427858276 = 59239^2 + 73674^2 .

It is a cyclic number.

It is not a de Polignac number, because 8937117397 - 2⁷ = 8937117269 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 (8937117367) 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, 343735272 + ... + 343735297.

It is an arithmetic number, because the mean of its divisors is an integer number (2406146995).

Almost surely, 2^8937117397 is an apocalyptic number.

It is an amenable number.

8937117397 is a deficient number, since it is larger than the sum of its proper divisors (687470583).

8937117397 is a wasteful number, since it uses less digits than its factorization.

8937117397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687470582.

The product of its digits is 2000376, while the sum is 55.

The square root of 8937117397 is about 94536.3284510246. The cubic root of 8937117397 is about 2075.2280116789.

Subtracting from 8937117397 its reverse (7937117398), we obtain a palindrome (999999999).

The spelling of 8937117397 in words is "eight billion, nine hundred thirty-seven million, one hundred seventeen thousand, three hundred ninety-seven".