8457139886 has 16 divisors (see below), whose sum is σ = 13893087600. Its totient is φ = 3837137088.

The previous prime is 8457139879. The next prime is 8457139891. The reversal of 8457139886 is 6889317548.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2755031 + ... + 2758098.

It is an arithmetic number, because the mean of its divisors is an integer number (868317975).

Almost surely, 2^8457139886 is an apocalyptic number.

8457139886 is a deficient number, since it is larger than the sum of its proper divisors (5435947714).

8457139886 is a wasteful number, since it uses less digits than its factorization.

8457139886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5513203.

The product of its digits is 11612160, while the sum is 59.

The square root of 8457139886 is about 91962.7092141157. The cubic root of 8457139886 is about 2037.3915692532.

The spelling of 8457139886 in words is "eight billion, four hundred fifty-seven million, one hundred thirty-nine thousand, eight hundred eighty-six".