2117397 has 8 divisors (see below), whose sum is σ = 2883456. Its totient is φ = 1381472.

The previous prime is 2117389. The next prime is 2117411. The reversal of 2117397 is 7937112.

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 2117397 - 2³ = 2117389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117317) 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, 7368 + ... + 7649.

It is an arithmetic number, because the mean of its divisors is an integer number (360432).

2^2117397 is an apocalyptic number.

It is an amenable number.

2117397 is a deficient number, since it is larger than the sum of its proper divisors (766059).

2117397 is a wasteful number, since it uses less digits than its factorization.

2117397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15067.

The product of its digits is 2646, while the sum is 30.

The square root of 2117397 is about 1455.1278294363. The cubic root of 2117397 is about 128.4105672537.

The spelling of 2117397 in words is "two million, one hundred seventeen thousand, three hundred ninety-seven".