86220939 has 16 divisors (see below), whose sum is σ = 134067200. Its totient is φ = 49268520.

The previous prime is 86220919. The next prime is 86220941. The reversal of 86220939 is 93902268.

It is not a de Polignac number, because 86220939 - 2¹⁷ = 86089867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86220897 and 86220906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86220919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40867 + ... + 42924.

It is an arithmetic number, because the mean of its divisors is an integer number (8379200).

Almost surely, 2^86220939 is an apocalyptic number.

86220939 is a deficient number, since it is larger than the sum of its proper divisors (47846261).

86220939 is an equidigital number, since it uses as much as digits as its factorization.

86220939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83815 (or 83801 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 86220939 is about 9285.5230870425. The cubic root of 86220939 is about 441.7781675213.

The spelling of 86220939 in words is "eighty-six million, two hundred twenty thousand, nine hundred thirty-nine".