1209416 has 32 divisors (see below), whose sum is σ = 2532600. Its totient is φ = 537600.

The previous prime is 1209379. The next prime is 1209427. The reversal of 1209416 is 6149021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1144900 + 64516 = 1070^2 + 254^2 .

It is a super-2 number, since 2×1209416² = 2925374122112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1209391 and 1209400.

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, 2816 + ... + 3216.

2^1209416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1209416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1266300).

1209416 is an abundant number, since it is smaller than the sum of its proper divisors (1323184).

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

1209416 is a wasteful number, since it uses less digits than its factorization.

1209416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 445 counting only the distinct ones).

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

The square root of 1209416 is about 1099.7345134168. The cubic root of 1209416 is about 106.5430773447.

The spelling of 1209416 in words is "one million, two hundred nine thousand, four hundred sixteen".