84315899 has 2 divisors, whose sum is σ = 84315900. Its totient is φ = 84315898.

The previous prime is 84315883. The next prime is 84315919. The reversal of 84315899 is 99851348.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84315899 - 2⁴ = 84315883 is a prime.

It is not a weakly prime, because it can be changed into another prime (84315809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42157949 + 42157950.

It is an arithmetic number, because the mean of its divisors is an integer number (42157950).

Almost surely, 2^84315899 is an apocalyptic number.

84315899 is a deficient number, since it is larger than the sum of its proper divisors (1).

84315899 is an equidigital number, since it uses as much as digits as its factorization.

84315899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 47.

The square root of 84315899 is about 9182.3689209267. The cubic root of 84315899 is about 438.5002294802.

The spelling of 84315899 in words is "eighty-four million, three hundred fifteen thousand, eight hundred ninety-nine".