138284994 has 8 divisors (see below), whose sum is σ = 276570000. Its totient is φ = 46094996.

The previous prime is 138284989. The next prime is 138284999. The reversal of 138284994 is 499482831.

It is an interprime number because it is at equal distance from previous prime (138284989) and next prime (138284999).

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

138284994 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (138284999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11523744 + ... + 11523755.

It is an arithmetic number, because the mean of its divisors is an integer number (34571250).

Almost surely, 2^138284994 is an apocalyptic number.

138284994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138284994 is a wasteful number, since it uses less digits than its factorization.

138284994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23047504.

The product of its digits is 497664, while the sum is 48.

The square root of 138284994 is about 11759.4640183981. The cubic root of 138284994 is about 517.1204171120.

The spelling of 138284994 in words is "one hundred thirty-eight million, two hundred eighty-four thousand, nine hundred ninety-four".