138877854 has 8 divisors (see below), whose sum is σ = 277755720. Its totient is φ = 46292616.

The previous prime is 138877807. The next prime is 138877867. The reversal of 138877854 is 458778831.

138877854 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

138877854 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 138877797 and 138877806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11573149 + ... + 11573160.

It is an arithmetic number, because the mean of its divisors is an integer number (34719465).

Almost surely, 2^138877854 is an apocalyptic number.

138877854 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

138877854 is a wasteful number, since it uses less digits than its factorization.

138877854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23146314.

The product of its digits is 1505280, while the sum is 51.

The square root of 138877854 is about 11784.6448397905. The cubic root of 138877854 is about 517.8583687762.

The spelling of 138877854 in words is "one hundred thirty-eight million, eight hundred seventy-seven thousand, eight hundred fifty-four".