499984386397 has 2 divisors, whose sum is σ = 499984386398. Its totient is φ = 499984386396.

The previous prime is 499984386389. The next prime is 499984386401. The reversal of 499984386397 is 793683489994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 460428745401 + 39555640996 = 678549^2 + 198886^2 .

It is a cyclic number.

It is not a de Polignac number, because 499984386397 - 2³ = 499984386389 is a prime.

It is a super-3 number, since 3×499984386397³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499984386497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249992193198 + 249992193199.

It is an arithmetic number, because the mean of its divisors is an integer number (249992193199).

Almost surely, 2^499984386397 is an apocalyptic number.

It is an amenable number.

499984386397 is a deficient number, since it is larger than the sum of its proper divisors (1).

499984386397 is an equidigital number, since it uses as much as digits as its factorization.

499984386397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2539579392, while the sum is 79.

The spelling of 499984386397 in words is "four hundred ninety-nine billion, nine hundred eighty-four million, three hundred eighty-six thousand, three hundred ninety-seven".