8638469087 has 2 divisors, whose sum is σ = 8638469088. Its totient is φ = 8638469086.

The previous prime is 8638469057. The next prime is 8638469101. The reversal of 8638469087 is 7809648368.

8638469087 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8638469087 - 2¹⁴ = 8638452703 is a prime.

It is a super-2 number, since 2×8638469087² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8638469017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4319234543 + 4319234544.

It is an arithmetic number, because the mean of its divisors is an integer number (4319234544).

Almost surely, 2^8638469087 is an apocalyptic number.

8638469087 is a deficient number, since it is larger than the sum of its proper divisors (1).

8638469087 is an equidigital number, since it uses as much as digits as its factorization.

8638469087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13934592, while the sum is 59.

The square root of 8638469087 is about 92943.3649433890. The cubic root of 8638469087 is about 2051.8499332788.

The spelling of 8638469087 in words is "eight billion, six hundred thirty-eight million, four hundred sixty-nine thousand, eighty-seven".