86478349 has 2 divisors, whose sum is σ = 86478350. Its totient is φ = 86478348.

The previous prime is 86478341. The next prime is 86478383. The reversal of 86478349 is 94387468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85562500 + 915849 = 9250^2 + 957^2 .

It is a cyclic number.

It is not a de Polignac number, because 86478349 - 2³ = 86478341 is a prime.

It is a super-3 number, since 3×86478349³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86478341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43239174 + 43239175.

It is an arithmetic number, because the mean of its divisors is an integer number (43239175).

Almost surely, 2^86478349 is an apocalyptic number.

It is an amenable number.

86478349 is a deficient number, since it is larger than the sum of its proper divisors (1).

86478349 is an equidigital number, since it uses as much as digits as its factorization.

86478349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 49.

The square root of 86478349 is about 9299.3735810537. The cubic root of 86478349 is about 442.2173691794.

The spelling of 86478349 in words is "eighty-six million, four hundred seventy-eight thousand, three hundred forty-nine".