86939309782 has 16 divisors (see below), whose sum is σ = 148701625632. Its totient is φ = 37765491840.

The previous prime is 86939309771. The next prime is 86939309783. The reversal of 86939309782 is 28790393968.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86939309783) 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, 98347194 + ... + 98348077.

It is an arithmetic number, because the mean of its divisors is an integer number (9293851602).

Almost surely, 2^86939309782 is an apocalyptic number.

86939309782 is a deficient number, since it is larger than the sum of its proper divisors (61762315850).

86939309782 is a wasteful number, since it uses less digits than its factorization.

86939309782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196695303.

The product of its (nonzero) digits is 35271936, while the sum is 64.

The spelling of 86939309782 in words is "eighty-six billion, nine hundred thirty-nine million, three hundred nine thousand, seven hundred eighty-two".