8749881 has 18 divisors (see below), whose sum is σ = 14702922. Its totient is φ = 4999680.

The previous prime is 8749847. The next prime is 8749891. The reversal of 8749881 is 1889478.

8749881 is a `hidden beast` number, since 87 + 498 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4769856 + 3980025 = 2184^2 + 1995^2 .

It is not a de Polignac number, because 8749881 - 2⁶ = 8749817 is a prime.

It is a super-2 number, since 2×8749881² = 153120835028322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8749841) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 9480 + ... + 10361.

It is an arithmetic number, because the mean of its divisors is an integer number (816829).

Almost surely, 2^8749881 is an apocalyptic number.

It is an amenable number.

8749881 is a deficient number, since it is larger than the sum of its proper divisors (5953041).

8749881 is a wasteful number, since it uses less digits than its factorization.

8749881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19861 (or 19851 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 8749881 is about 2958.0197768102. The cubic root of 8749881 is about 206.0633308282.

The spelling of 8749881 in words is "eight million, seven hundred forty-nine thousand, eight hundred eighty-one".