138558335 has 4 divisors (see below), whose sum is σ = 166270008. Its totient is φ = 110846664.

The previous prime is 138558323. The next prime is 138558349. The reversal of 138558335 is 533855831.

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 138558335 - 2⁴ = 138558319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138558292 and 138558301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13855829 + ... + 13855838.

It is an arithmetic number, because the mean of its divisors is an integer number (41567502).

Almost surely, 2^138558335 is an apocalyptic number.

138558335 is a deficient number, since it is larger than the sum of its proper divisors (27711673).

138558335 is an equidigital number, since it uses as much as digits as its factorization.

138558335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27711672.

The product of its digits is 216000, while the sum is 41.

The square root of 138558335 is about 11771.0804516833. The cubic root of 138558335 is about 517.4609148447.

The spelling of 138558335 in words is "one hundred thirty-eight million, five hundred fifty-eight thousand, three hundred thirty-five".