8879559749 has 2 divisors, whose sum is σ = 8879559750. Its totient is φ = 8879559748.

The previous prime is 8879559743. The next prime is 8879559809. The reversal of 8879559749 is 9479559788.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5687874724 + 3191685025 = 75418^2 + 56495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8879559749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8879559743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4439779874 + 4439779875.

It is an arithmetic number, because the mean of its divisors is an integer number (4439779875).

Almost surely, 2^8879559749 is an apocalyptic number.

It is an amenable number.

8879559749 is a deficient number, since it is larger than the sum of its proper divisors (1).

8879559749 is an equidigital number, since it uses as much as digits as its factorization.

8879559749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 228614400, while the sum is 71.

The square root of 8879559749 is about 94231.4159343899. The cubic root of 8879559749 is about 2070.7633884574.

The spelling of 8879559749 in words is "eight billion, eight hundred seventy-nine million, five hundred fifty-nine thousand, seven hundred forty-nine".