999959461 has 2 divisors, whose sum is σ = 999959462. Its totient is φ = 999959460.

The previous prime is 999959459. The next prime is 999959507. The reversal of 999959461 is 164959999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 885062500 + 114896961 = 29750^2 + 10719^2 .

It is a cyclic number.

It is not a de Polignac number, because 999959461 - 2¹ = 999959459 is a prime.

Together with 999959459, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 999959461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999959161) 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, 499979730 + 499979731.

It is an arithmetic number, because the mean of its divisors is an integer number (499979731).

Almost surely, 2^999959461 is an apocalyptic number.

It is an amenable number.

999959461 is a deficient number, since it is larger than the sum of its proper divisors (1).

999959461 is an equidigital number, since it uses as much as digits as its factorization.

999959461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7085880, while the sum is 61.

The square root of 999959461 is about 31622.1356173172. The cubic root of 999959461 is about 999.9864868174.

The spelling of 999959461 in words is "nine hundred ninety-nine million, nine hundred fifty-nine thousand, four hundred sixty-one".