139995375 has 72 divisors (see below), whose sum is σ = 257731344. Its totient is φ = 67454400.

The previous prime is 139995371. The next prime is 139995389. The reversal of 139995375 is 573599931.

It is not a de Polignac number, because 139995375 - 2² = 139995371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139995371) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 2978602 + ... + 2978648.

It is an arithmetic number, because the mean of its divisors is an integer number (3579602).

Almost surely, 2^139995375 is an apocalyptic number.

139995375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139995375 is a deficient number, since it is larger than the sum of its proper divisors (117735969).

139995375 is an equidigital number, since it uses as much as digits as its factorization.

139995375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 68 counting only the distinct ones).

The product of its digits is 1148175, while the sum is 51.

The square root of 139995375 is about 11831.9641226637. The cubic root of 139995375 is about 519.2436921971.

The spelling of 139995375 in words is "one hundred thirty-nine million, nine hundred ninety-five thousand, three hundred seventy-five".