499786022898 has 18 divisors (see below), whose sum is σ = 1082876214927. Its totient is φ = 166594341180.

The previous prime is 499786022851. The next prime is 499786022917. The reversal of 499786022898 is 898220687994.

499786022898 is a `hidden beast` number, since 4 + 9 + 9 + 7 + 8 + 602 + 2 + 8 + 9 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 249893011449 + 249893011449 = 499893^2 + 499893^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=499893.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2916043 + ... + 3082673.

Almost surely, 2^499786022898 is an apocalyptic number.

499786022898 is an abundant number, since it is smaller than the sum of its proper divisors (583090192029).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

499786022898 is an frugal number, since it uses more digits than its factorization.

499786022898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333270 (or 166636 counting only the distinct ones).

The product of its (nonzero) digits is 250822656, while the sum is 72.

Multiplying 499786022898 by its sum of digits (72), we get a square (35984593648656 = 5998716²).

The spelling of 499786022898 in words is "four hundred ninety-nine billion, seven hundred eighty-six million, twenty-two thousand, eight hundred ninety-eight".