999927653 has 2 divisors, whose sum is σ = 999927654. Its totient is φ = 999927652.

The previous prime is 999927601. The next prime is 999927667. The reversal of 999927653 is 356729999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 996475489 + 3452164 = 31567^2 + 1858^2 .

It is an emirp because it is prime and its reverse (356729999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999927653 - 2⁶ = 999927589 is a prime.

It is a super-2 number, since 2×999927653² = 1999710622468176818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 999927592 and 999927601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999927683) 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, 499963826 + 499963827.

It is an arithmetic number, because the mean of its divisors is an integer number (499963827).

Almost surely, 2^999927653 is an apocalyptic number.

It is an amenable number.

999927653 is a deficient number, since it is larger than the sum of its proper divisors (1).

999927653 is an equidigital number, since it uses as much as digits as its factorization.

999927653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8266860, while the sum is 59.

The square root of 999927653 is about 31621.6326744841. The cubic root of 999927653 is about 999.9758837517.

The spelling of 999927653 in words is "nine hundred ninety-nine million, nine hundred twenty-seven thousand, six hundred fifty-three".