139553086 has 4 divisors (see below), whose sum is σ = 209329632. Its totient is φ = 69776542.

The previous prime is 139553033. The next prime is 139553107. The reversal of 139553086 is 680355931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 680355931 = 1213 ⋅560887.

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 as a sum of consecutive naturals, namely, 34888270 + ... + 34888273.

It is an arithmetic number, because the mean of its divisors is an integer number (52332408).

Almost surely, 2^139553086 is an apocalyptic number.

139553086 is a deficient number, since it is larger than the sum of its proper divisors (69776546).

139553086 is an equidigital number, since it uses as much as digits as its factorization.

139553086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69776545.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 139553086 is about 11813.2589068385. The cubic root of 139553086 is about 518.6962978037.

The spelling of 139553086 in words is "one hundred thirty-nine million, five hundred fifty-three thousand, eighty-six".