999932447 has 2 divisors, whose sum is σ = 999932448. Its totient is φ = 999932446.

The previous prime is 999932389. The next prime is 999932471. The reversal of 999932447 is 744239999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999932447 - 2¹² = 999928351 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999932392 and 999932401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999992447) 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, 499966223 + 499966224.

It is an arithmetic number, because the mean of its divisors is an integer number (499966224).

Almost surely, 2^999932447 is an apocalyptic number.

999932447 is a deficient number, since it is larger than the sum of its proper divisors (1).

999932447 is an equidigital number, since it uses as much as digits as its factorization.

999932447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 56.

The square root of 999932447 is about 31621.7084769308. The cubic root of 999932447 is about 999.9774818263.

The spelling of 999932447 in words is "nine hundred ninety-nine million, nine hundred thirty-two thousand, four hundred forty-seven".