139508975 has 6 divisors (see below), whose sum is σ = 172991160. Its totient is φ = 111607160.

The previous prime is 139508969. The next prime is 139509011. The reversal of 139508975 is 579805931.

It is a de Polignac number, because none of the positive numbers 2^k-139508975 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2790155 + ... + 2790204.

It is an arithmetic number, because the mean of its divisors is an integer number (28831860).

Almost surely, 2^139508975 is an apocalyptic number.

139508975 is a deficient number, since it is larger than the sum of its proper divisors (33482185).

139508975 is an equidigital number, since it uses as much as digits as its factorization.

139508975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5580369 (or 5580364 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 47.

The square root of 139508975 is about 11811.3917469534. The cubic root of 139508975 is about 518.6416408885.

The spelling of 139508975 in words is "one hundred thirty-nine million, five hundred eight thousand, nine hundred seventy-five".