2104406 has 4 divisors (see below), whose sum is σ = 3156612. Its totient is φ = 1052202.

The previous prime is 2104397. The next prime is 2104423. The reversal of 2104406 is 6044012.

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

It is a super-2 number, since 2×2104406² = 8857049225672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526100 + ... + 526103.

It is an arithmetic number, because the mean of its divisors is an integer number (789153).

2^2104406 is an apocalyptic number.

2104406 is a deficient number, since it is larger than the sum of its proper divisors (1052206).

2104406 is a wasteful number, since it uses less digits than its factorization.

2104406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052205.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2104406 is about 1450.6570924929. The cubic root of 2104406 is about 128.1474131720.

Adding to 2104406 its reverse (6044012), we get a palindrome (8148418).

The spelling of 2104406 in words is "two million, one hundred four thousand, four hundred six".