999822007 has 2 divisors, whose sum is σ = 999822008. Its totient is φ = 999822006.

The previous prime is 999821993. The next prime is 999822041. The reversal of 999822007 is 700228999.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999822007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999822077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499911003 + 499911004.

It is an arithmetic number, because the mean of its divisors is an integer number (499911004).

Almost surely, 2^999822007 is an apocalyptic number.

999822007 is a deficient number, since it is larger than the sum of its proper divisors (1).

999822007 is an equidigital number, since it uses as much as digits as its factorization.

999822007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 999822007 is about 31619.9621600027. The cubic root of 999822007 is about 999.9406654795.

The spelling of 999822007 in words is "nine hundred ninety-nine million, eight hundred twenty-two thousand, seven".