7996500385 has 4 divisors (see below), whose sum is σ = 9595800468. Its totient is φ = 6397200304.

The previous prime is 7996500383. The next prime is 7996500389. The reversal of 7996500385 is 5830056997.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2066884369 + 5929616016 = 45463^2 + 77004^2 .

It is a cyclic number.

It is not a de Polignac number, because 7996500385 - 2¹ = 7996500383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7996500383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 799650034 + ... + 799650043.

It is an arithmetic number, because the mean of its divisors is an integer number (2398950117).

Almost surely, 2^7996500385 is an apocalyptic number.

It is an amenable number.

7996500385 is a deficient number, since it is larger than the sum of its proper divisors (1599300083).

7996500385 is a wasteful number, since it uses less digits than its factorization.

7996500385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599300082.

The product of its (nonzero) digits is 2041200, while the sum is 52.

The square root of 7996500385 is about 89423.1535174196. The cubic root of 7996500385 is about 1999.7083228810.

The spelling of 7996500385 in words is "seven billion, nine hundred ninety-six million, five hundred thousand, three hundred eighty-five".