86434210 has 16 divisors (see below), whose sum is σ = 160947000. Its totient is φ = 33381376.

The previous prime is 86434199. The next prime is 86434217. The reversal of 86434210 is 1243468.

It is a Cunningham number, because it is equal to 9297²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 85248289 + 1185921 = 9233^2 + 1089^2 .

It is not an unprimeable number, because it can be changed into a prime (86434217) 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, 148735 + ... + 149314.

Almost surely, 2^86434210 is an apocalyptic number.

86434210 is a deficient number, since it is larger than the sum of its proper divisors (74512790).

86434210 is a wasteful number, since it uses less digits than its factorization.

86434210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298085.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 86434210 is about 9297.0000537808. Note that the first 4 decimals coincide. The cubic root of 86434210 is about 442.1421196921.

Adding to 86434210 its reverse (1243468), we get a palindrome (87677678).

The spelling of 86434210 in words is "eighty-six million, four hundred thirty-four thousand, two hundred ten".