8782738723 has 4 divisors (see below), whose sum is σ = 9581169528. Its totient is φ = 7984307920.

The previous prime is 8782738661. The next prime is 8782738739. The reversal of 8782738723 is 3278372878.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8782738723 - 2¹³ = 8782730531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8782738763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399215386 + ... + 399215407.

It is an arithmetic number, because the mean of its divisors is an integer number (2395292382).

Almost surely, 2^8782738723 is an apocalyptic number.

8782738723 is a deficient number, since it is larger than the sum of its proper divisors (798430805).

8782738723 is a wasteful number, since it uses less digits than its factorization.

8782738723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798430804.

The product of its digits is 6322176, while the sum is 55.

The square root of 8782738723 is about 93716.2671204951. The cubic root of 8782738723 is about 2063.2094630271.

The spelling of 8782738723 in words is "eight billion, seven hundred eighty-two million, seven hundred thirty-eight thousand, seven hundred twenty-three".