2290172789 has 8 divisors (see below), whose sum is σ = 2304877080. Its totient is φ = 2275485696.

The previous prime is 2290172779. The next prime is 2290172887. The reversal of 2290172789 is 9872710922.

It can be written as a sum of positive squares in 4 ways, for example, as 1116562225 + 1173610564 = 33415^2 + 34258^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2290172789 - 2²⁴ = 2273395573 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 (2290172749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358229 + ... + 364565.

It is an arithmetic number, because the mean of its divisors is an integer number (288109635).

Almost surely, 2^2290172789 is an apocalyptic number.

It is an amenable number.

2290172789 is a deficient number, since it is larger than the sum of its proper divisors (14704291).

2290172789 is a wasteful number, since it uses less digits than its factorization.

2290172789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8599.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 2290172789 is about 47855.7498008338. The cubic root of 2290172789 is about 1318.1234409573.

The spelling of 2290172789 in words is "two billion, two hundred ninety million, one hundred seventy-two thousand, seven hundred eighty-nine".