499123881169 has 3 divisors (see below), whose sum is σ = 499124587657. Its totient is φ = 499123174682.

The previous prime is 499123881167. The next prime is 499123881181. The reversal of 499123881169 is 961188321994.

The square root of 499123881169 is 706487.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 961188321994 = 2 ⋅480594160997.

It is not a de Polignac number, because 499123881169 - 2¹ = 499123881167 is a prime.

It is a super-2 number, since 2×499123881169² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499123881163) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 353244 + ... + 1059730.

Almost surely, 2^499123881169 is an apocalyptic number.

499123881169 is the 706487-th square number.

499123881169 is the 353244-th centered octagonal number.

It is an amenable number.

499123881169 is a deficient number, since it is larger than the sum of its proper divisors (706488).

499123881169 is an frugal number, since it uses more digits than its factorization.

499123881169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412974 (or 706487 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 61.

The spelling of 499123881169 in words is "four hundred ninety-nine billion, one hundred twenty-three million, eight hundred eighty-one thousand, one hundred sixty-nine".