1012409 has 4 divisors (see below), whose sum is σ = 1017060. Its totient is φ = 1007760.

The previous prime is 1012399. The next prime is 1012411. The reversal of 1012409 is 9042101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9042101 = 157 ⋅57593.

It can be written as a sum of positive squares in 2 ways, for example, as 896809 + 115600 = 947^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012409 - 2¹⁶ = 946873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012439) 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 3 ways as a sum of consecutive naturals, for example, 1982 + ... + 2439.

It is an arithmetic number, because the mean of its divisors is an integer number (254265).

2^1012409 is an apocalyptic number.

It is an amenable number.

1012409 is a deficient number, since it is larger than the sum of its proper divisors (4651).

1012409 is an equidigital number, since it uses as much as digits as its factorization.

1012409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4650.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1012409 is about 1006.1853705953. The cubic root of 1012409 is about 100.4119341062.

The spelling of 1012409 in words is "one million, twelve thousand, four hundred nine".