139854838 has 8 divisors (see below), whose sum is σ = 210022488. Its totient is φ = 69847344.

The previous prime is 139854829. The next prime is 139854851. The reversal of 139854838 is 838458931.

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

It is a junction number, because it is equal to n+sod(n) for n = 139854791 and 139854800.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 37831 + ... + 41362.

It is an arithmetic number, because the mean of its divisors is an integer number (26252811).

Almost surely, 2^139854838 is an apocalyptic number.

139854838 is a deficient number, since it is larger than the sum of its proper divisors (70167650).

139854838 is an equidigital number, since it uses as much as digits as its factorization.

139854838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80078.

The product of its digits is 829440, while the sum is 49.

The square root of 139854838 is about 11826.0237611803. The cubic root of 139854838 is about 519.0698831628.

The spelling of 139854838 in words is "one hundred thirty-nine million, eight hundred fifty-four thousand, eight hundred thirty-eight".