999620027929 has 2 divisors, whose sum is σ = 999620027930. Its totient is φ = 999620027928.

The previous prime is 999620027927. The next prime is 999620027957. The reversal of 999620027929 is 929720026999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 740770062400 + 258849965529 = 860680^2 + 508773^2 .

It is a cyclic number.

It is not a de Polignac number, because 999620027929 - 2¹ = 999620027927 is a prime.

Together with 999620027927, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (999620027927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499810013964 + 499810013965.

It is an arithmetic number, because the mean of its divisors is an integer number (499810013965).

Almost surely, 2^999620027929 is an apocalyptic number.

It is an amenable number.

999620027929 is a deficient number, since it is larger than the sum of its proper divisors (1).

999620027929 is an equidigital number, since it uses as much as digits as its factorization.

999620027929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19840464, while the sum is 64.

The spelling of 999620027929 in words is "nine hundred ninety-nine billion, six hundred twenty million, twenty-seven thousand, nine hundred twenty-nine".