499999909439345 has 64 divisors (see below), whose sum is σ = 728096530821120. Its totient is φ = 321780558962688.

The previous prime is 499999909439341. The next prime is 499999909439347. The reversal of 499999909439345 is 543934909999994.

It is a happy number.

It is not a de Polignac number, because 499999909439345 - 2² = 499999909439341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499999909439341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 390672989 + ... + 391950741.

It is an arithmetic number, because the mean of its divisors is an integer number (11376508294080).

Almost surely, 2^{499999909439345} is an apocalyptic number.

It is an amenable number.

499999909439345 is a deficient number, since it is larger than the sum of its proper divisors (228096621381775).

499999909439345 is a wasteful number, since it uses less digits than its factorization.

499999909439345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279634.

The product of its (nonzero) digits is 123974556480, while the sum is 95.

The spelling of 499999909439345 in words is "four hundred ninety-nine trillion, nine hundred ninety-nine billion, nine hundred nine million, four hundred thirty-nine thousand, three hundred forty-five".