999946469 has 2 divisors, whose sum is σ = 999946470. Its totient is φ = 999946468.

The previous prime is 999946457. The next prime is 999946487. The reversal of 999946469 is 964649999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 999508225 + 438244 = 31615^2 + 662^2 .

It is an emirp because it is prime and its reverse (964649999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999946469 - 2¹² = 999942373 is a prime.

It is a super-2 number, since 2×999946469² = 1999785881731135922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999946429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499973234 + 499973235.

It is an arithmetic number, because the mean of its divisors is an integer number (499973235).

Almost surely, 2^999946469 is an apocalyptic number.

It is an amenable number.

999946469 is a deficient number, since it is larger than the sum of its proper divisors (1).

999946469 is an equidigital number, since it uses as much as digits as its factorization.

999946469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34012224, while the sum is 65.

The square root of 999946469 is about 31621.9301909292. The cubic root of 999946469 is about 999.9821560149.

The spelling of 999946469 in words is "nine hundred ninety-nine million, nine hundred forty-six thousand, four hundred sixty-nine".