138847340 has 12 divisors (see below), whose sum is σ = 291579456. Its totient is φ = 55538928.

The previous prime is 138847339. The next prime is 138847351. The reversal of 138847340 is 43748831.

It is a junction number, because it is equal to n+sod(n) for n = 138847294 and 138847303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3471164 + ... + 3471203.

It is an arithmetic number, because the mean of its divisors is an integer number (24298288).

Almost surely, 2^138847340 is an apocalyptic number.

138847340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138847340 is an abundant number, since it is smaller than the sum of its proper divisors (152732116).

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

138847340 is a wasteful number, since it uses less digits than its factorization.

138847340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6942376 (or 6942374 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 138847340 is about 11783.3501178570. The cubic root of 138847340 is about 517.8204383520.

The spelling of 138847340 in words is "one hundred thirty-eight million, eight hundred forty-seven thousand, three hundred forty".