249201143449 has 4 divisors (see below), whose sum is σ = 249204683700. Its totient is φ = 249197603200.

The previous prime is 249201143419. The next prime is 249201143537. The reversal of 249201143449 is 944341102942.

249201143449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 944341102942 = 2 ⋅472170551471.

It can be written as a sum of positive squares in 2 ways, for example, as 131401175049 + 117799968400 = 362493^2 + 343220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249201143449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249201143419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1662352 + ... + 1806049.

It is an arithmetic number, because the mean of its divisors is an integer number (62301170925).

Almost surely, 2^249201143449 is an apocalyptic number.

It is an amenable number.

249201143449 is a deficient number, since it is larger than the sum of its proper divisors (3540251).

249201143449 is an equidigital number, since it uses as much as digits as its factorization.

249201143449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540250.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 249201143449 in words is "two hundred forty-nine billion, two hundred one million, one hundred forty-three thousand, four hundred forty-nine".