8881987749 has 8 divisors (see below), whose sum is σ = 12009448512. Its totient is φ = 5837926080.

The previous prime is 8881987747. The next prime is 8881987753. The reversal of 8881987749 is 9477891888.

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

It is not a de Polignac number, because 8881987749 - 2¹ = 8881987747 is a prime.

It is a super-3 number, since 3×8881987749³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8881987747) 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, 20849524 + ... + 20849949.

It is an arithmetic number, because the mean of its divisors is an integer number (1501181064).

Almost surely, 2^8881987749 is an apocalyptic number.

It is an amenable number.

8881987749 is a deficient number, since it is larger than the sum of its proper divisors (3127460763).

8881987749 is a wasteful number, since it uses less digits than its factorization.

8881987749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41699547.

The product of its digits is 65028096, while the sum is 69.

The square root of 8881987749 is about 94244.2982307153. The cubic root of 8881987749 is about 2070.9521123527.

The spelling of 8881987749 in words is "eight billion, eight hundred eighty-one million, nine hundred eighty-seven thousand, seven hundred forty-nine".