8787000121 has 3 divisors (see below), whose sum is σ = 8787093861. Its totient is φ = 8786906382.

The previous prime is 8787000107. The next prime is 8787000133. The reversal of 8787000121 is 1210007878.

The square root of 8787000121 is 93739.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 8787000121 - 2¹⁹ = 8786475833 is a prime.

It is a super-2 number, since 2×8787000121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8787000181) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 46870 + ... + 140608.

It is an arithmetic number, because the mean of its divisors is an integer number (2929031287).

Almost surely, 2^8787000121 is an apocalyptic number.

8787000121 is the 93739-th square number.

8787000121 is the 46870-th centered octagonal number.

It is an amenable number.

8787000121 is a deficient number, since it is larger than the sum of its proper divisors (93740).

8787000121 is an frugal number, since it uses more digits than its factorization.

8787000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187478 (or 93739 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 34.

The cubic root of 8787000121 is about 2063.5430998478.

Adding to 8787000121 its reverse (1210007878), we get a palindrome (9997007999).

The spelling of 8787000121 in words is "eight billion, seven hundred eighty-seven million, one hundred twenty-one", and thus it is an aban number.