84850399 has 2 divisors, whose sum is σ = 84850400. Its totient is φ = 84850398.

The previous prime is 84850391. The next prime is 84850421. The reversal of 84850399 is 99305848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84850399 - 2³ = 84850391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84850391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42425199 + 42425200.

It is an arithmetic number, because the mean of its divisors is an integer number (42425200).

Almost surely, 2^84850399 is an apocalyptic number.

84850399 is a deficient number, since it is larger than the sum of its proper divisors (1).

84850399 is an equidigital number, since it uses as much as digits as its factorization.

84850399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 84850399 is about 9211.4276309376. The cubic root of 84850399 is about 439.4248666715.

The spelling of 84850399 in words is "eighty-four million, eight hundred fifty thousand, three hundred ninety-nine".