2117494 has 4 divisors (see below), whose sum is σ = 3176244. Its totient is φ = 1058746.

The previous prime is 2117477. The next prime is 2117497. The reversal of 2117494 is 4947112.

2117494 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 529372 + ... + 529375.

It is an arithmetic number, because the mean of its divisors is an integer number (794061).

2^2117494 is an apocalyptic number.

2117494 is a deficient number, since it is larger than the sum of its proper divisors (1058750).

2117494 is a wasteful number, since it uses less digits than its factorization.

2117494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058749.

The product of its digits is 2016, while the sum is 28.

The square root of 2117494 is about 1455.1611594597. The cubic root of 2117494 is about 128.4125280944.

The spelling of 2117494 in words is "two million, one hundred seventeen thousand, four hundred ninety-four".