86881229 has 2 divisors, whose sum is σ = 86881230. Its totient is φ = 86881228.

The previous prime is 86881213. The next prime is 86881241. The reversal of 86881229 is 92218868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86527204 + 354025 = 9302^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 86881229 - 2⁴ = 86881213 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86881229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86881259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43440614 + 43440615.

It is an arithmetic number, because the mean of its divisors is an integer number (43440615).

Almost surely, 2^86881229 is an apocalyptic number.

It is an amenable number.

86881229 is a deficient number, since it is larger than the sum of its proper divisors (1).

86881229 is an equidigital number, since it uses as much as digits as its factorization.

86881229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 44.

The square root of 86881229 is about 9321.0100847494. The cubic root of 86881229 is about 442.9030305109.

The spelling of 86881229 in words is "eighty-six million, eight hundred eighty-one thousand, two hundred twenty-nine".