2117913 has 8 divisors (see below), whose sum is σ = 3227328. Its totient is φ = 1210224.

The previous prime is 2117903. The next prime is 2117953. The reversal of 2117913 is 3197112.

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

It is not a de Polignac number, because 2117913 - 2⁶ = 2117849 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50406 + ... + 50447.

It is an arithmetic number, because the mean of its divisors is an integer number (403416).

2^2117913 is an apocalyptic number.

It is an amenable number.

2117913 is a deficient number, since it is larger than the sum of its proper divisors (1109415).

2117913 is a wasteful number, since it uses less digits than its factorization.

2117913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100863.

The product of its digits is 378, while the sum is 24.

The square root of 2117913 is about 1455.3051226461. The cubic root of 2117913 is about 128.4209974298.

The spelling of 2117913 in words is "two million, one hundred seventeen thousand, nine hundred thirteen".