8215379487 has 12 divisors (see below), whose sum is σ = 13561896400. Its totient is φ = 4694502528.

The previous prime is 8215379483. The next prime is 8215379507. The reversal of 8215379487 is 7849735128.

It is a happy number.

8215379487 is a `hidden beast` number, since 8 + 2 + 153 + 7 + 9 + 487 = 666.

It is not a de Polignac number, because 8215379487 - 2² = 8215379483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8215379483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65201362 + ... + 65201487.

Almost surely, 2^8215379487 is an apocalyptic number.

8215379487 is a deficient number, since it is larger than the sum of its proper divisors (5346516913).

8215379487 is a wasteful number, since it uses less digits than its factorization.

8215379487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130402862 (or 130402859 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 8215379487 is about 90638.7306122499. The cubic root of 8215379487 is about 2017.7895867303.

The spelling of 8215379487 in words is "eight billion, two hundred fifteen million, three hundred seventy-nine thousand, four hundred eighty-seven".