994441409 has 16 divisors (see below), whose sum is σ = 1118880000. Its totient is φ = 876950976.

The previous prime is 994441391. The next prime is 994441421. The reversal of 994441409 is 904144499.

It is a cyclic number.

It is not a de Polignac number, because 994441409 - 2¹⁶ = 994375873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 994441409.

It is not an unprimeable number, because it can be changed into a prime (994441439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330092 + ... + 333090.

It is an arithmetic number, because the mean of its divisors is an integer number (69930000).

Almost surely, 2^994441409 is an apocalyptic number.

It is an amenable number.

994441409 is a deficient number, since it is larger than the sum of its proper divisors (124438591).

994441409 is a wasteful number, since it uses less digits than its factorization.

994441409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4144.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 994441409 is about 31534.7650855369. The cubic root of 994441409 is about 998.1436925883.

The spelling of 994441409 in words is "nine hundred ninety-four million, four hundred forty-one thousand, four hundred nine".