918944047 has 16 divisors (see below), whose sum is σ = 1119209472. Its totient is φ = 737383680.

The previous prime is 918944023. The next prime is 918944107. The reversal of 918944047 is 740449819.

It is not a de Polignac number, because 918944047 - 2⁷ = 918943919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 918943988 and 918944006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (918944017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53154 + ... + 68287.

It is an arithmetic number, because the mean of its divisors is an integer number (69950592).

Almost surely, 2^918944047 is an apocalyptic number.

918944047 is a deficient number, since it is larger than the sum of its proper divisors (200265425).

918944047 is a wasteful number, since it uses less digits than its factorization.

918944047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121518.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 918944047 is about 30314.0899088196. The cubic root of 918944047 is about 972.2165793840.

The spelling of 918944047 in words is "nine hundred eighteen million, nine hundred forty-four thousand, forty-seven".