8747763921 has 48 divisors (see below), whose sum is σ = 13808418624. Its totient is φ = 5304362112.

The previous prime is 8747763907. The next prime is 8747764009. The reversal of 8747763921 is 1293677478.

8747763921 is a `hidden beast` number, since 87 + 477 + 6 + 3 + 92 + 1 = 666.

It is not a de Polignac number, because 8747763921 - 2⁵ = 8747763889 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (8747763421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2464470 + ... + 2468016.

It is an arithmetic number, because the mean of its divisors is an integer number (287675388).

Almost surely, 2^8747763921 is an apocalyptic number.

It is an amenable number.

8747763921 is a deficient number, since it is larger than the sum of its proper divisors (5060654703).

8747763921 is a wasteful number, since it uses less digits than its factorization.

8747763921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3870 (or 3867 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 54.

The square root of 8747763921 is about 93529.4815606288. The cubic root of 8747763921 is about 2060.4671012445.

The spelling of 8747763921 in words is "eight billion, seven hundred forty-seven million, seven hundred sixty-three thousand, nine hundred twenty-one".