249113522989 has 2 divisors, whose sum is σ = 249113522990. Its totient is φ = 249113522988.

The previous prime is 249113522873. The next prime is 249113523017. The reversal of 249113522989 is 989225311942.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145713975625 + 103399547364 = 381725^2 + 321558^2 .

It is a cyclic number.

It is not a de Polignac number, because 249113522989 - 2²⁷ = 248979305261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249113522389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124556761494 + 124556761495.

It is an arithmetic number, because the mean of its divisors is an integer number (124556761495).

Almost surely, 2^249113522989 is an apocalyptic number.

It is an amenable number.

249113522989 is a deficient number, since it is larger than the sum of its proper divisors (1).

249113522989 is an equidigital number, since it uses as much as digits as its factorization.

249113522989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 55.

The spelling of 249113522989 in words is "two hundred forty-nine billion, one hundred thirteen million, five hundred twenty-two thousand, nine hundred eighty-nine".