249646049 has 2 divisors, whose sum is σ = 249646050. Its totient is φ = 249646048.

The previous prime is 249646031. The next prime is 249646063. The reversal of 249646049 is 940646942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222010000 + 27636049 = 14900^2 + 5257^2 .

It is a cyclic number.

It is not a de Polignac number, because 249646049 - 2²⁴ = 232868833 is a prime.

It is not a weakly prime, because it can be changed into another prime (249646009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124823024 + 124823025.

It is an arithmetic number, because the mean of its divisors is an integer number (124823025).

Almost surely, 2^249646049 is an apocalyptic number.

It is an amenable number.

249646049 is a deficient number, since it is larger than the sum of its proper divisors (1).

249646049 is an equidigital number, since it uses as much as digits as its factorization.

249646049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 44.

The square root of 249646049 is about 15800.1914228911. The cubic root of 249646049 is about 629.6630843203.

It can be divided in two parts, 24964 and 6049, that added together give a palindrome (31013).

The spelling of 249646049 in words is "two hundred forty-nine million, six hundred forty-six thousand, forty-nine".