994081905 has 24 divisors (see below), whose sum is σ = 1738332648. Its totient is φ = 525482496.

The previous prime is 994081883. The next prime is 994081909. The reversal of 994081905 is 509180499.

994081905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 127780416 + 866301489 = 11304^2 + 29433^2 .

It is not a de Polignac number, because 994081905 - 2¹⁰ = 994080881 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (994081909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92662 + ... + 102831.

It is an arithmetic number, because the mean of its divisors is an integer number (72430527).

Almost surely, 2^994081905 is an apocalyptic number.

It is an amenable number.

994081905 is a deficient number, since it is larger than the sum of its proper divisors (744250743).

994081905 is a wasteful number, since it uses less digits than its factorization.

994081905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195617 (or 195614 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 994081905 is about 31529.0644485370. The cubic root of 994081905 is about 998.0233972825.

The spelling of 994081905 in words is "nine hundred ninety-four million, eighty-one thousand, nine hundred five".