138209883 has 8 divisors (see below), whose sum is σ = 210605568. Its totient is φ = 78977064.

The previous prime is 138209839. The next prime is 138209891. The reversal of 138209883 is 388902831.

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

It is not a de Polignac number, because 138209883 - 2⁸ = 138209627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138209803) 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, 3290691 + ... + 3290732.

It is an arithmetic number, because the mean of its divisors is an integer number (26325696).

Almost surely, 2^138209883 is an apocalyptic number.

138209883 is a deficient number, since it is larger than the sum of its proper divisors (72395685).

138209883 is an equidigital number, since it uses as much as digits as its factorization.

138209883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6581433.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 138209883 is about 11756.2699441617. The cubic root of 138209883 is about 517.0267736273.

The spelling of 138209883 in words is "one hundred thirty-eight million, two hundred nine thousand, eight hundred eighty-three".