23392784809 has 3 divisors (see below), whose sum is σ = 23392937757. Its totient is φ = 23392631862.

The previous prime is 23392784801. The next prime is 23392784843. The reversal of 23392784809 is 90848729332.

The square root of 23392784809 is 152947.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 23392784809 - 2³ = 23392784801 is a prime.

It is a super-2 number, since 2×23392784809² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23392784809.

It is not an unprimeable number, because it can be changed into a prime (23392784801) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 76474 + ... + 229420.

It is an arithmetic number, because the mean of its divisors is an integer number (7797645919).

Almost surely, 2^23392784809 is an apocalyptic number.

23392784809 is the 152947-th square number.

23392784809 is the 76474-th centered octagonal number.

It is an amenable number.

23392784809 is a deficient number, since it is larger than the sum of its proper divisors (152948).

23392784809 is an frugal number, since it uses more digits than its factorization.

23392784809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305894 (or 152947 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 55.

It can be divided in two parts, 23392 and 784809, that added together give a square (808201 = 899²).

The spelling of 23392784809 in words is "twenty-three billion, three hundred ninety-two million, seven hundred eighty-four thousand, eight hundred nine".