83399089 has 2 divisors, whose sum is σ = 83399090. Its totient is φ = 83399088.

The previous prime is 83399087. The next prime is 83399137. The reversal of 83399089 is 98099338.

83399089 = T₇₄₅₅ + T₇₄₅₆ + T₇₄₅₇.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49561600 + 33837489 = 7040^2 + 5817^2 .

It is a cyclic number.

It is not a de Polignac number, because 83399089 - 2¹ = 83399087 is a prime.

Together with 83399087, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (83399087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41699544 + 41699545.

It is an arithmetic number, because the mean of its divisors is an integer number (41699545).

Almost surely, 2^83399089 is an apocalyptic number.

83399089 is the 7457-th centered triangular number.

It is an amenable number.

83399089 is a deficient number, since it is larger than the sum of its proper divisors (1).

83399089 is an equidigital number, since it uses as much as digits as its factorization.

83399089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 83399089 is about 9132.3101677505. The cubic root of 83399089 is about 436.9050878955.

The spelling of 83399089 in words is "eighty-three million, three hundred ninety-nine thousand, eighty-nine".