899932609 has 2 divisors, whose sum is σ = 899932610. Its totient is φ = 899932608.

The previous prime is 899932507. The next prime is 899932613. The reversal of 899932609 is 906239998.

899932609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 803892609 + 96040000 = 28353^2 + 9800^2 .

It is a cyclic number.

It is not a de Polignac number, because 899932609 - 2²¹ = 897835457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 899932609.

It is not a weakly prime, because it can be changed into another prime (899932619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449966304 + 449966305.

It is an arithmetic number, because the mean of its divisors is an integer number (449966305).

Almost surely, 2^899932609 is an apocalyptic number.

It is an amenable number.

899932609 is a deficient number, since it is larger than the sum of its proper divisors (1).

899932609 is an equidigital number, since it uses as much as digits as its factorization.

899932609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1889568, while the sum is 55.

The square root of 899932609 is about 29998.8767956402. The cubic root of 899932609 is about 965.4652857467.

The spelling of 899932609 in words is "eight hundred ninety-nine million, nine hundred thirty-two thousand, six hundred nine".