9639786486 has 16 divisors (see below), whose sum is σ = 21032261568. Its totient is φ = 2921147400.

The previous prime is 9639786467. The next prime is 9639786487. The reversal of 9639786486 is 6846879369.

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 146057371 = 9639786486 / (9 + 6 + 3 + 9 + 7 + 8 + 6 + 4 + 8 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9639786487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73028620 + ... + 73028751.

It is an arithmetic number, because the mean of its divisors is an integer number (1314516348).

Almost surely, 2^9639786486 is an apocalyptic number.

9639786486 is an abundant number, since it is smaller than the sum of its proper divisors (11392475082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9639786486 is a wasteful number, since it uses less digits than its factorization.

9639786486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146057387.

The product of its digits is 94058496, while the sum is 66.

The square root of 9639786486 is about 98182.4143418769. The cubic root of 9639786486 is about 2128.2491645031.

The spelling of 9639786486 in words is "nine billion, six hundred thirty-nine million, seven hundred eighty-six thousand, four hundred eighty-six".