86403139 has 2 divisors, whose sum is σ = 86403140. Its totient is φ = 86403138.

The previous prime is 86403131. The next prime is 86403181. The reversal of 86403139 is 93130468.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86403139 - 2³ = 86403131 is a prime.

It is not a weakly prime, because it can be changed into another prime (86403131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43201569 + 43201570.

It is an arithmetic number, because the mean of its divisors is an integer number (43201570).

Almost surely, 2^86403139 is an apocalyptic number.

86403139 is a deficient number, since it is larger than the sum of its proper divisors (1).

86403139 is an equidigital number, since it uses as much as digits as its factorization.

86403139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 86403139 is about 9295.3288806798. The cubic root of 86403139 is about 442.0891335567.

It can be divided in two parts, 86 and 403139, that added together give a square (403225 = 635²).

The spelling of 86403139 in words is "eighty-six million, four hundred three thousand, one hundred thirty-nine".