1397587117 has 8 divisors (see below), whose sum is σ = 1433807424. Its totient is φ = 1361828448.

The previous prime is 1397587109. The next prime is 1397587127. The reversal of 1397587117 is 7117857931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1397587117 - 2³ = 1397587109 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 (1397587127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109273 + ... + 121390.

It is an arithmetic number, because the mean of its divisors is an integer number (179225928).

Almost surely, 2^1397587117 is an apocalyptic number.

It is an amenable number.

1397587117 is a deficient number, since it is larger than the sum of its proper divisors (36220307).

1397587117 is an equidigital number, since it uses as much as digits as its factorization.

1397587117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230819.

The product of its digits is 370440, while the sum is 49.

The square root of 1397587117 is about 37384.3164575735. The cubic root of 1397587117 is about 1118.0458902399.

The spelling of 1397587117 in words is "one billion, three hundred ninety-seven million, five hundred eighty-seven thousand, one hundred seventeen".