139395255 has 8 divisors (see below), whose sum is σ = 223032432. Its totient is φ = 74344128.

The previous prime is 139395239. The next prime is 139395281. The reversal of 139395255 is 552593931.

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

It is not a de Polignac number, because 139395255 - 2⁴ = 139395239 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4646494 + ... + 4646523.

It is an arithmetic number, because the mean of its divisors is an integer number (27879054).

Almost surely, 2^139395255 is an apocalyptic number.

139395255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139395255 is a deficient number, since it is larger than the sum of its proper divisors (83637177).

139395255 is an equidigital number, since it uses as much as digits as its factorization.

139395255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9293025.

The product of its digits is 182250, while the sum is 42.

The square root of 139395255 is about 11806.5767689030. The cubic root of 139395255 is about 518.5006799208.

The spelling of 139395255 in words is "one hundred thirty-nine million, three hundred ninety-five thousand, two hundred fifty-five".