94423909 has 2 divisors, whose sum is σ = 94423910. Its totient is φ = 94423908.

The previous prime is 94423897. The next prime is 94423937. The reversal of 94423909 is 90932449.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87946884 + 6477025 = 9378^2 + 2545^2 .

It is an emirp because it is prime and its reverse (90932449) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-94423909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94423009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47211954 + 47211955.

It is an arithmetic number, because the mean of its divisors is an integer number (47211955).

Almost surely, 2^94423909 is an apocalyptic number.

It is an amenable number.

94423909 is a deficient number, since it is larger than the sum of its proper divisors (1).

94423909 is an equidigital number, since it uses as much as digits as its factorization.

94423909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 94423909 is about 9717.1965607371. The cubic root of 94423909 is about 455.3660605249.

The spelling of 94423909 in words is "ninety-four million, four hundred twenty-three thousand, nine hundred nine".