2109416 has 8 divisors (see below), whose sum is σ = 3955170. Its totient is φ = 1054704.

The previous prime is 2109403. The next prime is 2109421. The reversal of 2109416 is 6149012.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2044900 + 64516 = 1430^2 + 254^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2109416² = 8899271722112, which contains 22 as substring.

It is an Ulam number.

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

It is a junction number, because it is equal to n+sod(n) for n = 2109391 and 2109400.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131831 + ... + 131846.

2^2109416 is an apocalyptic number.

It is an amenable number.

2109416 is a deficient number, since it is larger than the sum of its proper divisors (1845754).

2109416 is a wasteful number, since it uses less digits than its factorization.

2109416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263683 (or 263679 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2109416 is about 1452.3828696318. The cubic root of 2109416 is about 128.2490269170.

The spelling of 2109416 in words is "two million, one hundred nine thousand, four hundred sixteen".