994361609 has 2 divisors, whose sum is σ = 994361610. Its totient is φ = 994361608.

The previous prime is 994361597. The next prime is 994361623. The reversal of 994361609 is 906163499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 614891209 + 379470400 = 24797^2 + 19480^2 .

It is a cyclic number.

It is not a de Polignac number, because 994361609 - 2¹⁶ = 994296073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (994361009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497180804 + 497180805.

It is an arithmetic number, because the mean of its divisors is an integer number (497180805).

Almost surely, 2^994361609 is an apocalyptic number.

It is an amenable number.

994361609 is a deficient number, since it is larger than the sum of its proper divisors (1).

994361609 is an equidigital number, since it uses as much as digits as its factorization.

994361609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 994361609 is about 31533.4997899060. The cubic root of 994361609 is about 998.1169928429.

The spelling of 994361609 in words is "nine hundred ninety-four million, three hundred sixty-one thousand, six hundred nine".