138029494 has 16 divisors (see below), whose sum is σ = 219769200. Its totient is φ = 64793344.

The previous prime is 138029491. The next prime is 138029539. The reversal of 138029494 is 494920831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138029491) 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 7 ways as a sum of consecutive naturals, for example, 9402 + ... + 19090.

It is an arithmetic number, because the mean of its divisors is an integer number (13735575).

Almost surely, 2^138029494 is an apocalyptic number.

138029494 is a deficient number, since it is larger than the sum of its proper divisors (81739706).

138029494 is a wasteful number, since it uses less digits than its factorization.

138029494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10127.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 138029494 is about 11748.5954054091. The cubic root of 138029494 is about 516.8017377460.

The spelling of 138029494 in words is "one hundred thirty-eight million, twenty-nine thousand, four hundred ninety-four".