49498685289 has 9 divisors (see below), whose sum is σ = 71499065079. Its totient is φ = 32998678560.

The previous prime is 49498685281. The next prime is 49498685321. The reversal of 49498685289 is 98258689494.

The square root of 49498685289 is 222483.

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

49498685289 is a `hidden beast` number, since 4 + 9 + 4 + 98 + 6 + 8 + 528 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 33531835689 + 15966849600 = 183117^2 + 126360^2 .

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

It is not a de Polignac number, because 49498685289 - 2³ = 49498685281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49498685281) 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, 630369 + ... + 704529.

Almost surely, 2^49498685289 is an apocalyptic number.

49498685289 is the 222483-rd square number.

49498685289 is the 111242-nd centered octagonal number.

It is an amenable number.

49498685289 is a deficient number, since it is larger than the sum of its proper divisors (22000379790).

49498685289 is an frugal number, since it uses more digits than its factorization.

49498685289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148328 (or 74164 counting only the distinct ones).

The product of its digits is 358318080, while the sum is 72.

The spelling of 49498685289 in words is "forty-nine billion, four hundred ninety-eight million, six hundred eighty-five thousand, two hundred eighty-nine".