138798034 has 4 divisors (see below), whose sum is σ = 208197054. Its totient is φ = 69399016.

The previous prime is 138798019. The next prime is 138798041. The reversal of 138798034 is 430897831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 121550625 + 17247409 = 11025^2 + 4153^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 34699507 + ... + 34699510.

Almost surely, 2^138798034 is an apocalyptic number.

138798034 is a deficient number, since it is larger than the sum of its proper divisors (69399020).

138798034 is an equidigital number, since it uses as much as digits as its factorization.

138798034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69399019.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 138798034 is about 11781.2577427030. The cubic root of 138798034 is about 517.7591367880.

The spelling of 138798034 in words is "one hundred thirty-eight million, seven hundred ninety-eight thousand, thirty-four".