249683100489 has 9 divisors (see below), whose sum is σ = 360655532679. Its totient is φ = 166454400960.

The previous prime is 249683100439. The next prime is 249683100497. The reversal of 249683100489 is 984001386942.

The square root of 249683100489 is 499683.

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

249683100489 is a `hidden beast` number, since 2 + 496 + 8 + 3 + 100 + 48 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 211891740489 + 37791360000 = 460317^2 + 194400^2 .

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

It is not a de Polignac number, because 249683100489 - 2¹⁵ = 249683067721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249683100439) 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, 1415769 + ... + 1582329.

Almost surely, 2^249683100489 is an apocalyptic number.

249683100489 is the 499683-rd square number.

249683100489 is the 249842-nd centered octagonal number.

It is an amenable number.

249683100489 is a deficient number, since it is larger than the sum of its proper divisors (110972432190).

249683100489 is an frugal number, since it uses more digits than its factorization.

249683100489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333128 (or 166564 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 249683100489 in words is "two hundred forty-nine billion, six hundred eighty-three million, one hundred thousand, four hundred eighty-nine".