298479746889 has 9 divisors (see below), whose sum is σ = 431139779629. Its totient is φ = 198985405260.

The previous prime is 298479746881. The next prime is 298479746891. The reversal of 298479746889 is 988647974892.

The square root of 298479746889 is 546333.

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

298479746889 is a `hidden beast` number, since 2 + 9 + 8 + 4 + 79 + 7 + 468 + 89 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 298479746889 - 2³ = 298479746881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (298479746881) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1547944 + ... + 1730054.

Almost surely, 2^298479746889 is an apocalyptic number.

298479746889 is the 546333-rd square number.

298479746889 is the 273167-th centered octagonal number.

It is an amenable number.

298479746889 is a deficient number, since it is larger than the sum of its proper divisors (132660032740).

298479746889 is an frugal number, since it uses more digits than its factorization.

298479746889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364228 (or 182114 counting only the distinct ones).

The product of its digits is 3511517184, while the sum is 81.

Multiplying 298479746889 by its sum of digits (81), we get a square (24176859498009 = 4916997²).

The spelling of 298479746889 in words is "two hundred ninety-eight billion, four hundred seventy-nine million, seven hundred forty-six thousand, eight hundred eighty-nine".