138447094 has 4 divisors (see below), whose sum is σ = 207670644. Its totient is φ = 69223546.

The previous prime is 138447083. The next prime is 138447107. The reversal of 138447094 is 490744831.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34611772 + ... + 34611775.

It is an arithmetic number, because the mean of its divisors is an integer number (51917661).

Almost surely, 2^138447094 is an apocalyptic number.

138447094 is a deficient number, since it is larger than the sum of its proper divisors (69223550).

138447094 is an equidigital number, since it uses as much as digits as its factorization.

138447094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69223549.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 138447094 is about 11766.3543206891. The cubic root of 138447094 is about 517.3223972997.

The spelling of 138447094 in words is "one hundred thirty-eight million, four hundred forty-seven thousand, ninety-four".