99164789 has 2 divisors, whose sum is σ = 99164790. Its totient is φ = 99164788.

The previous prime is 99164771. The next prime is 99164801. The reversal of 99164789 is 98746199.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99161764 + 3025 = 9958^2 + 55^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99164789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99164789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99164189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49582394 + 49582395.

It is an arithmetic number, because the mean of its divisors is an integer number (49582395).

Almost surely, 2^99164789 is an apocalyptic number.

It is an amenable number.

99164789 is a deficient number, since it is larger than the sum of its proper divisors (1).

99164789 is an equidigital number, since it uses as much as digits as its factorization.

99164789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 53.

The square root of 99164789 is about 9958.1518867710. The cubic root of 99164789 is about 462.8630335935.

The spelling of 99164789 in words is "ninety-nine million, one hundred sixty-four thousand, seven hundred eighty-nine".