139195855 has 8 divisors (see below), whose sum is σ = 169388064. Its totient is φ = 109788000.

The previous prime is 139195841. The next prime is 139195871. The reversal of 139195855 is 558591931.

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

It is not a de Polignac number, because 139195855 - 2¹³ = 139187663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195696 + ... + 196405.

It is an arithmetic number, because the mean of its divisors is an integer number (21173508).

Almost surely, 2^139195855 is an apocalyptic number.

139195855 is a deficient number, since it is larger than the sum of its proper divisors (30192209).

139195855 is an equidigital number, since it uses as much as digits as its factorization.

139195855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392177.

The product of its digits is 243000, while the sum is 46.

The square root of 139195855 is about 11798.1293008680. The cubic root of 139195855 is about 518.2533296244.

The spelling of 139195855 in words is "one hundred thirty-nine million, one hundred ninety-five thousand, eight hundred fifty-five".