8458861387 has 2 divisors, whose sum is σ = 8458861388. Its totient is φ = 8458861386.

The previous prime is 8458861381. The next prime is 8458861471. The reversal of 8458861387 is 7831688548.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8458861387 - 2³ = 8458861379 is a prime.

It is not a weakly prime, because it can be changed into another prime (8458861381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4229430693 + 4229430694.

It is an arithmetic number, because the mean of its divisors is an integer number (4229430694).

Almost surely, 2^8458861387 is an apocalyptic number.

8458861387 is a deficient number, since it is larger than the sum of its proper divisors (1).

8458861387 is an equidigital number, since it uses as much as digits as its factorization.

8458861387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10321920, while the sum is 58.

The square root of 8458861387 is about 91972.0685153922. The cubic root of 8458861387 is about 2037.5298009216.

The spelling of 8458861387 in words is "eight billion, four hundred fifty-eight million, eight hundred sixty-one thousand, three hundred eighty-seven".