999959507 has 2 divisors, whose sum is σ = 999959508. Its totient is φ = 999959506.

The previous prime is 999959461. The next prime is 999959557. The reversal of 999959507 is 705959999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999959507 - 2⁸ = 999959251 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999959507.

It is not a weakly prime, because it can be changed into another prime (999959557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499979753 + 499979754.

It is an arithmetic number, because the mean of its divisors is an integer number (499979754).

Almost surely, 2^999959507 is an apocalyptic number.

999959507 is a deficient number, since it is larger than the sum of its proper divisors (1).

999959507 is an equidigital number, since it uses as much as digits as its factorization.

999959507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10333575, while the sum is 62.

The square root of 999959507 is about 31622.1363446558. The cubic root of 999959507 is about 999.9865021511.

The spelling of 999959507 in words is "nine hundred ninety-nine million, nine hundred fifty-nine thousand, five hundred seven".