139028086 has 8 divisors (see below), whose sum is σ = 208596024. Its totient is φ = 69496080.

The previous prime is 139028069. The next prime is 139028107. The reversal of 139028086 is 680820931.

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

It is a super-3 number, since 3×139028086³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5121 + ... + 17443.

It is an arithmetic number, because the mean of its divisors is an integer number (26074503).

Almost surely, 2^139028086 is an apocalyptic number.

139028086 is a deficient number, since it is larger than the sum of its proper divisors (69567938).

139028086 is a wasteful number, since it uses less digits than its factorization.

139028086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17966.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 139028086 is about 11791.0171741033. The cubic root of 139028086 is about 518.0450336761.

The spelling of 139028086 in words is "one hundred thirty-nine million, twenty-eight thousand, eighty-six".