2117149 has 4 divisors (see below), whose sum is σ = 2147040. Its totient is φ = 2087260.

The previous prime is 2117147. The next prime is 2117179. The reversal of 2117149 is 9417112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2117149 - 2¹ = 2117147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117147) 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, 14839 + ... + 14980.

It is an arithmetic number, because the mean of its divisors is an integer number (536760).

2^2117149 is an apocalyptic number.

It is an amenable number.

2117149 is a deficient number, since it is larger than the sum of its proper divisors (29891).

2117149 is an equidigital number, since it uses as much as digits as its factorization.

2117149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29890.

The product of its digits is 504, while the sum is 25.

The square root of 2117149 is about 1455.0426110599. The cubic root of 2117149 is about 128.4055536979.

The spelling of 2117149 in words is "two million, one hundred seventeen thousand, one hundred forty-nine".