138894935 has 4 divisors (see below), whose sum is σ = 166673928. Its totient is φ = 111115944.

The previous prime is 138894919. The next prime is 138894937. The reversal of 138894935 is 539498831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138894935 - 2⁴ = 138894919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138894937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13889489 + ... + 13889498.

It is an arithmetic number, because the mean of its divisors is an integer number (41668482).

Almost surely, 2^138894935 is an apocalyptic number.

138894935 is a deficient number, since it is larger than the sum of its proper divisors (27778993).

138894935 is an equidigital number, since it uses as much as digits as its factorization.

138894935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27778992.

The product of its digits is 933120, while the sum is 50.

The square root of 138894935 is about 11785.3695317542. The cubic root of 138894935 is about 517.8795988858.

The spelling of 138894935 in words is "one hundred thirty-eight million, eight hundred ninety-four thousand, nine hundred thirty-five".