118728839 has 4 divisors (see below), whose sum is σ = 119059920. Its totient is φ = 118397760.

The previous prime is 118728811. The next prime is 118728859. The reversal of 118728839 is 938827811.

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

It is a cyclic number.

It is not a de Polignac number, because 118728839 - 2⁸ = 118728583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 118728793 and 118728802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118728809) 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 3 ways as a sum of consecutive naturals, for example, 165002 + ... + 165719.

It is an arithmetic number, because the mean of its divisors is an integer number (29764980).

Almost surely, 2^118728839 is an apocalyptic number.

118728839 is a deficient number, since it is larger than the sum of its proper divisors (331081).

118728839 is an equidigital number, since it uses as much as digits as its factorization.

118728839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331080.

The product of its digits is 193536, while the sum is 47.

The square root of 118728839 is about 10896.2763823244. The cubic root of 118728839 is about 491.4945883434.

The spelling of 118728839 in words is "one hundred eighteen million, seven hundred twenty-eight thousand, eight hundred thirty-nine".