86489901221 has 4 divisors (see below), whose sum is σ = 86584015200. Its totient is φ = 86395787244.

The previous prime is 86489901209. The next prime is 86489901257. The reversal of 86489901221 is 12210998468.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 86489901221 - 2¹⁸ = 86489639077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86489901221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86489901271) 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, 47055611 + ... + 47057448.

It is an arithmetic number, because the mean of its divisors is an integer number (21646003800).

Almost surely, 2^86489901221 is an apocalyptic number.

It is an amenable number.

86489901221 is a deficient number, since it is larger than the sum of its proper divisors (94113979).

86489901221 is an equidigital number, since it uses as much as digits as its factorization.

86489901221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94113978.

The product of its (nonzero) digits is 497664, while the sum is 50.

The spelling of 86489901221 in words is "eighty-six billion, four hundred eighty-nine million, nine hundred one thousand, two hundred twenty-one".