249528413 has 2 divisors, whose sum is σ = 249528414. Its totient is φ = 249528412.

The previous prime is 249528401. The next prime is 249528437. The reversal of 249528413 is 314825942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212780569 + 36747844 = 14587^2 + 6062^2 .

It is a cyclic number.

It is not a de Polignac number, because 249528413 - 2⁸ = 249528157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249528473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124764206 + 124764207.

It is an arithmetic number, because the mean of its divisors is an integer number (124764207).

Almost surely, 2^249528413 is an apocalyptic number.

It is an amenable number.

249528413 is a deficient number, since it is larger than the sum of its proper divisors (1).

249528413 is an equidigital number, since it uses as much as digits as its factorization.

249528413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 38.

The square root of 249528413 is about 15796.4683711265. The cubic root of 249528413 is about 629.5641673613.

The spelling of 249528413 in words is "two hundred forty-nine million, five hundred twenty-eight thousand, four hundred thirteen".