8387415946 has 24 divisors (see below), whose sum is σ = 15760970820. Its totient is φ = 3318098112.

The previous prime is 8387415901. The next prime is 8387415947. The reversal of 8387415946 is 6495147838.

It can be written as a sum of positive squares in 2 ways, for example, as 8246637721 + 140778225 = 90811^2 + 11865^2 .

It is not an unprimeable number, because it can be changed into a prime (8387415947) 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, 3290491 + ... + 3293038.

Almost surely, 2^8387415946 is an apocalyptic number.

8387415946 is a deficient number, since it is larger than the sum of its proper divisors (7373554874).

8387415946 is a wasteful number, since it uses less digits than its factorization.

8387415946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6583558 (or 6583551 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 55.

The square root of 8387415946 is about 91582.8365251918. The cubic root of 8387415946 is about 2031.7770962439. Note that the first 3 decimals are identical.

The spelling of 8387415946 in words is "eight billion, three hundred eighty-seven million, four hundred fifteen thousand, nine hundred forty-six".