94901809 has 2 divisors, whose sum is σ = 94901810. Its totient is φ = 94901808.

The previous prime is 94901797. The next prime is 94901843. The reversal of 94901809 is 90810949.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80156209 + 14745600 = 8953^2 + 3840^2 .

It is an emirp because it is prime and its reverse (90810949) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94901809 - 2⁹ = 94901297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (94901869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47450904 + 47450905.

It is an arithmetic number, because the mean of its divisors is an integer number (47450905).

Almost surely, 2^94901809 is an apocalyptic number.

It is an amenable number.

94901809 is a deficient number, since it is larger than the sum of its proper divisors (1).

94901809 is an equidigital number, since it uses as much as digits as its factorization.

94901809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 94901809 is about 9741.7559505461. The cubic root of 94901809 is about 456.1330037411.

The spelling of 94901809 in words is "ninety-four million, nine hundred one thousand, eight hundred nine".