2138717 has 8 divisors (see below), whose sum is σ = 2455296. Its totient is φ = 1824912.

The previous prime is 2138713. The next prime is 2138737. The reversal of 2138717 is 7178312.

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 2138717 - 2² = 2138713 is a prime.

It is a super-2 number, since 2×2138717² = 9148220812178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2138717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138713) 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, 1388 + ... + 2490.

It is an arithmetic number, because the mean of its divisors is an integer number (306912).

2^2138717 is an apocalyptic number.

It is an amenable number.

2138717 is a deficient number, since it is larger than the sum of its proper divisors (316579).

2138717 is a wasteful number, since it uses less digits than its factorization.

2138717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387.

The product of its digits is 2352, while the sum is 29.

The square root of 2138717 is about 1462.4352977141. The cubic root of 2138717 is about 128.8401160036.

The spelling of 2138717 in words is "two million, one hundred thirty-eight thousand, seven hundred seventeen".