249449303601 has 27 divisors (see below), whose sum is σ = 362394440811. Its totient is φ = 165345588144.

The previous prime is 249449303573. The next prime is 249449303611. The reversal of 249449303601 is 106303944942.

The square root of 249449303601 is 499449.

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

249449303601 is a `hidden beast` number, since 2 + 4 + 9 + 4 + 4 + 9 + 30 + 3 + 601 = 666.

It can be written as a sum of positive squares in only one way, i.e., 232324964001 + 17124339600 = 482001^2 + 130860^2 .

It is not a de Polignac number, because 249449303601 - 2¹³ = 249449295409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (249449303611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 343121100 + ... + 343121826.

Almost surely, 2^249449303601 is an apocalyptic number.

249449303601 is the 499449-th square number.

249449303601 is the 249725-th centered octagonal number.

It is an amenable number.

249449303601 is a deficient number, since it is larger than the sum of its proper divisors (112945137210).

249449303601 is an frugal number, since it uses more digits than its factorization.

249449303601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918 (or 959 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 249449303601 in words is "two hundred forty-nine billion, four hundred forty-nine million, three hundred three thousand, six hundred one".