2129916 has 12 divisors (see below), whose sum is σ = 4969832. Its totient is φ = 709968.

The previous prime is 2129903. The next prime is 2129951. The reversal of 2129916 is 6199212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88735 + ... + 88758.

2^2129916 is an apocalyptic number.

It is an amenable number.

2129916 is an abundant number, since it is smaller than the sum of its proper divisors (2839916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2129916 is a wasteful number, since it uses less digits than its factorization.

2129916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177500 (or 177498 counting only the distinct ones).

The product of its digits is 1944, while the sum is 30.

The square root of 2129916 is about 1459.4231737231. The cubic root of 2129916 is about 128.6631437314.

The spelling of 2129916 in words is "two million, one hundred twenty-nine thousand, nine hundred sixteen".