249143441 has 2 divisors, whose sum is σ = 249143442. Its totient is φ = 249143440.

The previous prime is 249143431. The next prime is 249143471. The reversal of 249143441 is 144341942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245831041 + 3312400 = 15679^2 + 1820^2 .

It is a cyclic number.

It is not a de Polignac number, because 249143441 - 2²² = 244949137 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 249143398 and 249143407.

It is not a weakly prime, because it can be changed into another prime (249143431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124571720 + 124571721.

It is an arithmetic number, because the mean of its divisors is an integer number (124571721).

Almost surely, 2^249143441 is an apocalyptic number.

It is an amenable number.

249143441 is a deficient number, since it is larger than the sum of its proper divisors (1).

249143441 is an equidigital number, since it uses as much as digits as its factorization.

249143441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 32.

The square root of 249143441 is about 15784.2782856867. The cubic root of 249143441 is about 629.2402372184.

The spelling of 249143441 in words is "two hundred forty-nine million, one hundred forty-three thousand, four hundred forty-one".