138965275 has 12 divisors (see below), whose sum is σ = 172683144. Its totient is φ = 110936000.

The previous prime is 138965263. The next prime is 138965329. The reversal of 138965275 is 572569831.

It is not a de Polignac number, because 138965275 - 2⁵ = 138965243 is a prime.

It is a super-2 number, since 2×138965275² = 38622695311651250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6615 + ... + 17935.

It is an arithmetic number, because the mean of its divisors is an integer number (14390262).

Almost surely, 2^138965275 is an apocalyptic number.

138965275 is a deficient number, since it is larger than the sum of its proper divisors (33717869).

138965275 is a wasteful number, since it uses less digits than its factorization.

138965275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11822 (or 11817 counting only the distinct ones).

The product of its digits is 453600, while the sum is 46.

The square root of 138965275 is about 11788.3533625354. The cubic root of 138965275 is about 517.9670066889.

The spelling of 138965275 in words is "one hundred thirty-eight million, nine hundred sixty-five thousand, two hundred seventy-five".