499998836127389 has 32 divisors (see below), whose sum is σ = 544203311184000. Its totient is φ = 457757207297280.

The previous prime is 499998836127383. The next prime is 499998836127407. The reversal of 499998836127389 is 983721638899994.

It is a de Polignac number, because none of the positive numbers 2^k-499998836127389 is a prime.

It is a super-2 number, since 2×499998836127389² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499998836127383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1654537274 + ... + 1654839444.

It is an arithmetic number, because the mean of its divisors is an integer number (17006353474500).

Almost surely, 2^{499998836127389} is an apocalyptic number.

It is an amenable number.

499998836127389 is a deficient number, since it is larger than the sum of its proper divisors (44204475056611).

499998836127389 is a wasteful number, since it uses less digits than its factorization.

499998836127389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318173.

The product of its digits is 91424858112, while the sum is 95.

The spelling of 499998836127389 in words is "four hundred ninety-nine trillion, nine hundred ninety-eight billion, eight hundred thirty-six million, one hundred twenty-seven thousand, three hundred eighty-nine".