8916221252 has 12 divisors (see below), whose sum is σ = 15670356156. Its totient is φ = 4438976640.

The previous prime is 8916221231. The next prime is 8916221287. The reversal of 8916221252 is 2521226198.

It can be written as a sum of positive squares in 2 ways, for example, as 1854508096 + 7061713156 = 43064^2 + 84034^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4782449 + ... + 4784312.

It is an arithmetic number, because the mean of its divisors is an integer number (1305863013).

Almost surely, 2^8916221252 is an apocalyptic number.

It is an amenable number.

8916221252 is a deficient number, since it is larger than the sum of its proper divisors (6754134904).

8916221252 is a wasteful number, since it uses less digits than its factorization.

8916221252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9566998 (or 9566996 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 8916221252 is about 94425.7446462563. The cubic root of 8916221252 is about 2073.6093649877.

The spelling of 8916221252 in words is "eight billion, nine hundred sixteen million, two hundred twenty-one thousand, two hundred fifty-two".