2191417 has 4 divisors (see below), whose sum is σ = 2286720. Its totient is φ = 2096116.

The previous prime is 2191393. The next prime is 2191429. The reversal of 2191417 is 7141912.

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 2191417 - 2¹⁵ = 2158649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2191391 and 2191400.

It is not an unprimeable number, because it can be changed into a prime (2191457) 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, 47617 + ... + 47662.

It is an arithmetic number, because the mean of its divisors is an integer number (571680).

2^2191417 is an apocalyptic number.

It is an amenable number.

2191417 is a deficient number, since it is larger than the sum of its proper divisors (95303).

2191417 is an equidigital number, since it uses as much as digits as its factorization.

2191417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95302.

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

The square root of 2191417 is about 1480.3435412093. The cubic root of 2191417 is about 129.8897882476.

The spelling of 2191417 in words is "two million, one hundred ninety-one thousand, four hundred seventeen".