138469899 has 8 divisors (see below), whose sum is σ = 184688640. Its totient is φ = 92282216.

The previous prime is 138469897. The next prime is 138469907. The reversal of 138469899 is 998964831.

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

It is a cyclic number.

It is not a de Polignac number, because 138469899 - 2¹ = 138469897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138469897) 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, 6262 + ... + 17780.

It is an arithmetic number, because the mean of its divisors is an integer number (23086080).

Almost surely, 2^138469899 is an apocalyptic number.

138469899 is a deficient number, since it is larger than the sum of its proper divisors (46218741).

138469899 is a wasteful number, since it uses less digits than its factorization.

138469899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15529.

The product of its digits is 3359232, while the sum is 57.

The square root of 138469899 is about 11767.3233575015. The cubic root of 138469899 is about 517.3508001820.

The spelling of 138469899 in words is "one hundred thirty-eight million, four hundred sixty-nine thousand, eight hundred ninety-nine".