850079999 has 2 divisors, whose sum is σ = 850080000. Its totient is φ = 850079998.

The previous prime is 850079983. The next prime is 850080001. The reversal of 850079999 is 999970058.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 850079999 - 2⁴ = 850079983 is a prime.

Together with 850080001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (850079939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 425039999 + 425040000.

It is an arithmetic number, because the mean of its divisors is an integer number (425040000).

Almost surely, 2^850079999 is an apocalyptic number.

850079999 is a deficient number, since it is larger than the sum of its proper divisors (1).

850079999 is an equidigital number, since it uses as much as digits as its factorization.

850079999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837080, while the sum is 56.

The square root of 850079999 is about 29156.1314134780. The cubic root of 850079999 is about 947.2979541014.

The spelling of 850079999 in words is "eight hundred fifty million, seventy-nine thousand, nine hundred ninety-nine".