8387491679 has 32 divisors (see below), whose sum is σ = 10047283200. Its totient is φ = 6850287360.

The previous prime is 8387491661. The next prime is 8387491691. The reversal of 8387491679 is 9761947838.

It is not a de Polignac number, because 8387491679 - 2¹⁶ = 8387426143 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8387491649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5311112 + ... + 5312690.

It is an arithmetic number, because the mean of its divisors is an integer number (313977600).

Almost surely, 2^8387491679 is an apocalyptic number.

8387491679 is a deficient number, since it is larger than the sum of its proper divisors (1659791521).

8387491679 is a wasteful number, since it uses less digits than its factorization.

8387491679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943.

The product of its digits is 18289152, while the sum is 62.

The square root of 8387491679 is about 91583.2499914695. The cubic root of 8387491679 is about 2031.7832114413.

The spelling of 8387491679 in words is "eight billion, three hundred eighty-seven million, four hundred ninety-one thousand, six hundred seventy-nine".