138985233 has 8 divisors (see below), whose sum is σ = 185757600. Its totient is φ = 92434848.

The previous prime is 138985201. The next prime is 138985289. The reversal of 138985233 is 332589831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138985233 - 2⁵ = 138985201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138985433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54028 + ... + 56541.

It is an arithmetic number, because the mean of its divisors is an integer number (23219700).

Almost surely, 2^138985233 is an apocalyptic number.

It is an amenable number.

138985233 is a deficient number, since it is larger than the sum of its proper divisors (46772367).

138985233 is a wasteful number, since it uses less digits than its factorization.

138985233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110991.

The product of its digits is 155520, while the sum is 42.

The square root of 138985233 is about 11789.1998456214. The cubic root of 138985233 is about 517.9918020696.

The spelling of 138985233 in words is "one hundred thirty-eight million, nine hundred eighty-five thousand, two hundred thirty-three".