999955013 has 2 divisors, whose sum is σ = 999955014. Its totient is φ = 999955012.

The previous prime is 999954979. The next prime is 999955063. The reversal of 999955013 is 310559999.

999955013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (999955063) can be obtained adding 999955013 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 992376004 + 7579009 = 31502^2 + 2753^2 .

It is a cyclic number.

It is not a de Polignac number, because 999955013 - 2⁸ = 999954757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999955063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499977506 + 499977507.

It is an arithmetic number, because the mean of its divisors is an integer number (499977507).

Almost surely, 2^999955013 is an apocalyptic number.

It is an amenable number.

999955013 is a deficient number, since it is larger than the sum of its proper divisors (1).

999955013 is an equidigital number, since it uses as much as digits as its factorization.

999955013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 492075, while the sum is 50.

The square root of 999955013 is about 31622.0652867582. The cubic root of 999955013 is about 999.9850041085.

The spelling of 999955013 in words is "nine hundred ninety-nine million, nine hundred fifty-five thousand, thirteen".