86078149 has 2 divisors, whose sum is σ = 86078150. Its totient is φ = 86078148.

The previous prime is 86078143. The next prime is 86078171. The reversal of 86078149 is 94187068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79977249 + 6100900 = 8943^2 + 2470^2 .

It is a cyclic number.

It is not a de Polignac number, because 86078149 - 2³ = 86078141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86078141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43039074 + 43039075.

It is an arithmetic number, because the mean of its divisors is an integer number (43039075).

Almost surely, 2^86078149 is an apocalyptic number.

It is an amenable number.

86078149 is a deficient number, since it is larger than the sum of its proper divisors (1).

86078149 is an equidigital number, since it uses as much as digits as its factorization.

86078149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 86078149 is about 9277.8310504126. The cubic root of 86078149 is about 441.5341573450.

The spelling of 86078149 in words is "eighty-six million, seventy-eight thousand, one hundred forty-nine".