86890239 has 14 divisors (see below), whose sum is σ = 130276856. Its totient is φ = 57926340.

The previous prime is 86890231. The next prime is 86890253. The reversal of 86890239 is 93209868.

It is not a de Polignac number, because 86890239 - 2³ = 86890231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86890194 and 86890203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86890231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 58867 + ... + 60324.

Almost surely, 2^86890239 is an apocalyptic number.

86890239 is a deficient number, since it is larger than the sum of its proper divisors (43386617).

86890239 is an equidigital number, since it uses as much as digits as its factorization.

86890239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119209 (or 119194 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 86890239 is about 9321.4933889372. The cubic root of 86890239 is about 442.9183403710.

The spelling of 86890239 in words is "eighty-six million, eight hundred ninety thousand, two hundred thirty-nine".