118723847 has 4 divisors (see below), whose sum is σ = 129516936. Its totient is φ = 107930760.

The previous prime is 118723793. The next prime is 118723897. The reversal of 118723847 is 748327811.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118723847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118723897) 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, 5396528 + ... + 5396549.

It is an arithmetic number, because the mean of its divisors is an integer number (32379234).

Almost surely, 2^118723847 is an apocalyptic number.

118723847 is a deficient number, since it is larger than the sum of its proper divisors (10793089).

118723847 is a wasteful number, since it uses less digits than its factorization.

118723847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10793088.

The product of its digits is 75264, while the sum is 41.

The square root of 118723847 is about 10896.0473108371. The cubic root of 118723847 is about 491.4876998868.

The spelling of 118723847 in words is "one hundred eighteen million, seven hundred twenty-three thousand, eight hundred forty-seven".