8756939449 has 4 divisors (see below), whose sum is σ = 8970523380. Its totient is φ = 8543355520.

The previous prime is 8756939447. The next prime is 8756939509. The reversal of 8756939449 is 9449396578.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1906894224 + 6850045225 = 43668^2 + 82765^2 .

It is a cyclic number.

It is not a de Polignac number, because 8756939449 - 2¹ = 8756939447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8756939447) 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, 106791904 + ... + 106791985.

It is an arithmetic number, because the mean of its divisors is an integer number (2242630845).

Almost surely, 2^8756939449 is an apocalyptic number.

It is an amenable number.

8756939449 is a deficient number, since it is larger than the sum of its proper divisors (213583931).

8756939449 is a wasteful number, since it uses less digits than its factorization.

8756939449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213583930.

The product of its digits is 58786560, while the sum is 64.

The square root of 8756939449 is about 93578.5202330107. The cubic root of 8756939449 is about 2061.1872573697.

The spelling of 8756939449 in words is "eight billion, seven hundred fifty-six million, nine hundred thirty-nine thousand, four hundred forty-nine".