999998465 has 16 divisors (see below), whose sum is σ = 1239697920. Its totient is φ = 773573760.

The previous prime is 999998459. The next prime is 999998501. The reversal of 999998465 is 564899999.

It is not a de Polignac number, because 999998465 - 2¹⁶ = 999932929 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 999998395 and 999998404.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 329726 + ... + 332744.

It is an arithmetic number, because the mean of its divisors is an integer number (77481120).

Almost surely, 2^999998465 is an apocalyptic number.

It is an amenable number.

999998465 is a deficient number, since it is larger than the sum of its proper divisors (239699455).

999998465 is a wasteful number, since it uses less digits than its factorization.

999998465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5192.

The product of its digits is 56687040, while the sum is 68.

The square root of 999998465 is about 31622.7523311934. The cubic root of 999998465 is about 999.9994883331. Note that the first 3 decimals are identical.

The spelling of 999998465 in words is "nine hundred ninety-nine million, nine hundred ninety-eight thousand, four hundred sixty-five".