1011409 has 6 divisors (see below), whose sum is σ = 1176594. Its totient is φ = 866880.

The previous prime is 1011407. The next prime is 1011431. The reversal of 1011409 is 9041101.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 705600 + 305809 = 840^2 + 553^2 .

It is not a de Polignac number, because 1011409 - 2¹ = 1011407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011392 and 1011401.

It is not an unprimeable number, because it can be changed into a prime (1011407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10272 + ... + 10369.

It is an arithmetic number, because the mean of its divisors is an integer number (196099).

2^1011409 is an apocalyptic number.

It is an amenable number.

1011409 is a deficient number, since it is larger than the sum of its proper divisors (165185).

1011409 is an equidigital number, since it uses as much as digits as its factorization.

1011409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20655 (or 20648 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 1011409 is about 1005.6883214993. The cubic root of 1011409 is about 100.3788628170.

The spelling of 1011409 in words is "one million, eleven thousand, four hundred nine".