94509509 has 2 divisors, whose sum is σ = 94509510. Its totient is φ = 94509508.

The previous prime is 94509487. The next prime is 94509529. The reversal of 94509509 is 90590549.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90307009 + 4202500 = 9503^2 + 2050^2 .

It is a cyclic number.

It is not a de Polignac number, because 94509509 - 2⁸ = 94509253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94509529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47254754 + 47254755.

It is an arithmetic number, because the mean of its divisors is an integer number (47254755).

Almost surely, 2^94509509 is an apocalyptic number.

It is an amenable number.

94509509 is a deficient number, since it is larger than the sum of its proper divisors (1).

94509509 is an equidigital number, since it uses as much as digits as its factorization.

94509509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 94509509 is about 9721.6001254937. The cubic root of 94509509 is about 455.5036230068.

The spelling of 94509509 in words is "ninety-four million, five hundred nine thousand, five hundred nine".