86731349 has 2 divisors, whose sum is σ = 86731350. Its totient is φ = 86731348.

The previous prime is 86731343. The next prime is 86731439. The reversal of 86731349 is 94313768.

Together with next prime (86731439) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84511249 + 2220100 = 9193^2 + 1490^2 .

It is a cyclic number.

It is not a de Polignac number, because 86731349 - 2¹² = 86727253 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86731343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43365674 + 43365675.

It is an arithmetic number, because the mean of its divisors is an integer number (43365675).

Almost surely, 2^86731349 is an apocalyptic number.

It is an amenable number.

86731349 is a deficient number, since it is larger than the sum of its proper divisors (1).

86731349 is an equidigital number, since it uses as much as digits as its factorization.

86731349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 86731349 is about 9312.9667131371. The cubic root of 86731349 is about 442.6481978850.

The spelling of 86731349 in words is "eighty-six million, seven hundred thirty-one thousand, three hundred forty-nine".