913999 has 2 divisors, whose sum is σ = 914000. Its totient is φ = 913998.

The previous prime is 913981. The next prime is 914021. The reversal of 913999 is 999319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 913999 - 2⁹ = 913487 is a prime.

913999 is a modest number, since divided by 999 gives 913 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456999 + 457000.

It is an arithmetic number, because the mean of its divisors is an integer number (457000).

2⁹¹³⁹⁹⁹ is an apocalyptic number.

913999 is a deficient number, since it is larger than the sum of its proper divisors (1).

913999 is an equidigital number, since it uses as much as digits as its factorization.

913999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19683, while the sum is 40.

The square root of 913999 is about 956.0329492230. The cubic root of 913999 is about 97.0469535674.

The spelling of 913999 in words is "nine hundred thirteen thousand, nine hundred ninety-nine".