8921247124 has 12 divisors (see below), whose sum is σ = 15627332448. Its totient is φ = 4456295000.

The previous prime is 8921247121. The next prime is 8921247149. The reversal of 8921247124 is 4217421298.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8921247121) 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, 1077502 + ... + 1085749.

It is an arithmetic number, because the mean of its divisors is an integer number (1302277704).

Almost surely, 2^8921247124 is an apocalyptic number.

It is an amenable number.

8921247124 is a deficient number, since it is larger than the sum of its proper divisors (6706085324).

8921247124 is a wasteful number, since it uses less digits than its factorization.

8921247124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164286 (or 2164284 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 8921247124 is about 94452.3537239809. The cubic root of 8921247124 is about 2073.9989073512.

The spelling of 8921247124 in words is "eight billion, nine hundred twenty-one million, two hundred forty-seven thousand, one hundred twenty-four".