249584938489 has 2 divisors, whose sum is σ = 249584938490. Its totient is φ = 249584938488.

The previous prime is 249584938451. The next prime is 249584938513. The reversal of 249584938489 is 984839485942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246926504889 + 2658433600 = 496917^2 + 51560^2 .

It is a cyclic number.

It is not a de Polignac number, because 249584938489 - 2²¹ = 249582841337 is a prime.

It is not a weakly prime, because it can be changed into another prime (249584939489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124792469244 + 124792469245.

It is an arithmetic number, because the mean of its divisors is an integer number (124792469245).

Almost surely, 2^249584938489 is an apocalyptic number.

It is an amenable number.

249584938489 is a deficient number, since it is larger than the sum of its proper divisors (1).

249584938489 is an equidigital number, since it uses as much as digits as its factorization.

249584938489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 716636160, while the sum is 73.

The spelling of 249584938489 in words is "two hundred forty-nine billion, five hundred eighty-four million, nine hundred thirty-eight thousand, four hundred eighty-nine".