86839099988 has 6 divisors (see below), whose sum is σ = 151968424986. Its totient is φ = 43419549992.

The previous prime is 86839099981. The next prime is 86839100003. The reversal of 86839099988 is 88999093868.

It can be written as a sum of positive squares in only one way, i.e., 84790451344 + 2048648644 = 291188^2 + 45262^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86839099981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10854887495 + ... + 10854887502.

It is an arithmetic number, because the mean of its divisors is an integer number (25328070831).

Almost surely, 2^86839099988 is an apocalyptic number.

It is an amenable number.

86839099988 is a deficient number, since it is larger than the sum of its proper divisors (65129324998).

86839099988 is a wasteful number, since it uses less digits than its factorization.

86839099988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21709775001 (or 21709774999 counting only the distinct ones).

The product of its (nonzero) digits is 483729408, while the sum is 77.

The spelling of 86839099988 in words is "eighty-six billion, eight hundred thirty-nine million, ninety-nine thousand, nine hundred eighty-eight".