1126409 has 6 divisors (see below), whose sum is σ = 1150926. Its totient is φ = 1102400.

The previous prime is 1126399. The next prime is 1126421. The reversal of 1126409 is 9046211.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 760384 + 366025 = 872^2 + 605^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1126409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1126439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2609 + ... + 3009.

It is an arithmetic number, because the mean of its divisors is an integer number (191821).

2^1126409 is an apocalyptic number.

It is an amenable number.

1126409 is a deficient number, since it is larger than the sum of its proper divisors (24517).

1126409 is an frugal number, since it uses more digits than its factorization.

1126409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 454 counting only the distinct ones).

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

The square root of 1126409 is about 1061.3241729085. The cubic root of 1126409 is about 104.0475928620.

The spelling of 1126409 in words is "one million, one hundred twenty-six thousand, four hundred nine".