2116406 has 4 divisors (see below), whose sum is σ = 3174612. Its totient is φ = 1058202.

The previous prime is 2116403. The next prime is 2116409. The reversal of 2116406 is 6046112.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (2116403) and next prime (2116409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 529100 + ... + 529103.

It is an arithmetic number, because the mean of its divisors is an integer number (793653).

2^2116406 is an apocalyptic number.

2116406 is a deficient number, since it is larger than the sum of its proper divisors (1058206).

2116406 is a wasteful number, since it uses less digits than its factorization.

2116406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058205.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2116406 is about 1454.7872696721. The cubic root of 2116406 is about 128.3905309024.

The spelling of 2116406 in words is "two million, one hundred sixteen thousand, four hundred six".