94561009 has 2 divisors, whose sum is σ = 94561010. Its totient is φ = 94561008.

The previous prime is 94561003. The next prime is 94561031. The reversal of 94561009 is 90016549.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82864609 + 11696400 = 9103^2 + 3420^2 .

It is a cyclic number.

It is not a de Polignac number, because 94561009 - 2³ = 94561001 is a prime.

It is equal to p_5465707 and since 94561009 and 5465707 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (94561001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47280504 + 47280505.

It is an arithmetic number, because the mean of its divisors is an integer number (47280505).

Almost surely, 2^94561009 is an apocalyptic number.

It is an amenable number.

94561009 is a deficient number, since it is larger than the sum of its proper divisors (1).

94561009 is an equidigital number, since it uses as much as digits as its factorization.

94561009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 94561009 is about 9724.2485056687. The cubic root of 94561009 is about 455.5863454656.

The spelling of 94561009 in words is "ninety-four million, five hundred sixty-one thousand, nine".