139086393 has 8 divisors (see below), whose sum is σ = 187285056. Its totient is φ = 91806000.

The previous prime is 139086383. The next prime is 139086397. The reversal of 139086393 is 393680931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139086393 - 2⁴ = 139086377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139086397) 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 in 7 ways as a sum of consecutive naturals, for example, 229213 + ... + 229818.

It is an arithmetic number, because the mean of its divisors is an integer number (23410632).

Almost surely, 2^139086393 is an apocalyptic number.

It is an amenable number.

139086393 is a deficient number, since it is larger than the sum of its proper divisors (48198663).

139086393 is a wasteful number, since it uses less digits than its factorization.

139086393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459135.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 139086393 is about 11793.4894327336. The cubic root of 139086393 is about 518.1174445369.

It can be divided in two parts, 13908 and 6393, that added together give a triangular number (20301 = T₂₀₁).

The spelling of 139086393 in words is "one hundred thirty-nine million, eighty-six thousand, three hundred ninety-three".