2109814 has 16 divisors (see below), whose sum is σ = 3715488. Its totient is φ = 879552.

The previous prime is 2109799. The next prime is 2109841. The reversal of 2109814 is 4189012.

It is a happy number.

It is a super-2 number, since 2×2109814² = 8902630229192, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1519 + ... + 2554.

It is an arithmetic number, because the mean of its divisors is an integer number (232218).

2^2109814 is an apocalyptic number.

2109814 is a deficient number, since it is larger than the sum of its proper divisors (1605674).

2109814 is a wasteful number, since it uses less digits than its factorization.

2109814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4119.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 2109814 is about 1452.5198793820. The cubic root of 2109814 is about 128.2570923251.

It can be divided in two parts, 21098 and 14, that added together give a palindrome (21112).

The spelling of 2109814 in words is "two million, one hundred nine thousand, eight hundred fourteen".