1066471409 has 4 divisors (see below), whose sum is σ = 1071254016. Its totient is φ = 1061688804.

The previous prime is 1066471397. The next prime is 1066471453. The reversal of 1066471409 is 9041746601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9041746601 = 40939 ⋅220859.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1066471409 is a prime.

It is a super-2 number, since 2×1066471409² = 2274722532428890562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1066471499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2390969 + ... + 2391414.

It is an arithmetic number, because the mean of its divisors is an integer number (267813504).

Almost surely, 2^1066471409 is an apocalyptic number.

It is an amenable number.

1066471409 is a deficient number, since it is larger than the sum of its proper divisors (4782607).

1066471409 is an equidigital number, since it uses as much as digits as its factorization.

1066471409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4782606.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1066471409 is about 32656.8738399743. The cubic root of 1066471409 is about 1021.6835611403.

The spelling of 1066471409 in words is "one billion, sixty-six million, four hundred seventy-one thousand, four hundred nine".