86403826981 has 8 divisors (see below), whose sum is σ = 87196748184. Its totient is φ = 85611402240.

The previous prime is 86403826897. The next prime is 86403826987. The reversal of 86403826981 is 18962830468.

It can be written as a sum of positive squares in 4 ways, for example, as 23677956 + 86380149025 = 4866^2 + 293905^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 86403826981 - 2⁷ = 86403826853 is a prime.

It is a super-2 number, since 2×86403826981² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86403826987) 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, 230175 + ... + 475171.

It is an arithmetic number, because the mean of its divisors is an integer number (10899593523).

Almost surely, 2^86403826981 is an apocalyptic number.

It is an amenable number.

86403826981 is a deficient number, since it is larger than the sum of its proper divisors (792921203).

86403826981 is a wasteful number, since it uses less digits than its factorization.

86403826981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248231.

The product of its (nonzero) digits is 3981312, while the sum is 55.

The spelling of 86403826981 in words is "eighty-six billion, four hundred three million, eight hundred twenty-six thousand, nine hundred eighty-one".