1122471709 has 4 divisors (see below), whose sum is σ = 1161177660. Its totient is φ = 1083765760.

The previous prime is 1122471689. The next prime is 1122471751. The reversal of 1122471709 is 9071742211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9071742211 = 7 ⋅1295963173.

It can be written as a sum of positive squares in 2 ways, for example, as 456676900 + 665794809 = 21370^2 + 25803^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122471709 - 2⁵ = 1122471677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122471809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19352932 + ... + 19352989.

It is an arithmetic number, because the mean of its divisors is an integer number (290294415).

Almost surely, 2^1122471709 is an apocalyptic number.

It is an amenable number.

1122471709 is a deficient number, since it is larger than the sum of its proper divisors (38705951).

1122471709 is an equidigital number, since it uses as much as digits as its factorization.

1122471709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38705950.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 1122471709 is about 33503.3089261344. The cubic root of 1122471709 is about 1039.2622075530.

The spelling of 1122471709 in words is "one billion, one hundred twenty-two million, four hundred seventy-one thousand, seven hundred nine".