94687889 has 2 divisors, whose sum is σ = 94687890. Its totient is φ = 94687888.

The previous prime is 94687867. The next prime is 94687891. The reversal of 94687889 is 98878649.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55249489 + 39438400 = 7433^2 + 6280^2 .

It is an emirp because it is prime and its reverse (98878649) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 94687889 - 2⁸ = 94687633 is a prime.

Together with 94687891, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (94681889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47343944 + 47343945.

It is an arithmetic number, because the mean of its divisors is an integer number (47343945).

Almost surely, 2^94687889 is an apocalyptic number.

It is an amenable number.

94687889 is a deficient number, since it is larger than the sum of its proper divisors (1).

94687889 is an equidigital number, since it uses as much as digits as its factorization.

94687889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6967296, while the sum is 59.

The square root of 94687889 is about 9730.7702161751. The cubic root of 94687889 is about 455.7900198328.

The spelling of 94687889 in words is "ninety-four million, six hundred eighty-seven thousand, eight hundred eighty-nine".