999320071 has 2 divisors, whose sum is σ = 999320072. Its totient is φ = 999320070.

The previous prime is 999320039. The next prime is 999320099. The reversal of 999320071 is 170023999.

It is a strong prime.

It is an emirp because it is prime and its reverse (170023999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999320071 - 2⁵ = 999320039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999320771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499660035 + 499660036.

It is an arithmetic number, because the mean of its divisors is an integer number (499660036).

Almost surely, 2^999320071 is an apocalyptic number.

999320071 is a deficient number, since it is larger than the sum of its proper divisors (1).

999320071 is an equidigital number, since it uses as much as digits as its factorization.

999320071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 999320071 is about 31612.0241522114. The cubic root of 999320071 is about 999.7733056135.

The spelling of 999320071 in words is "nine hundred ninety-nine million, three hundred twenty thousand, seventy-one".