634886249 has 2 divisors, whose sum is σ = 634886250. Its totient is φ = 634886248.

The previous prime is 634886237. The next prime is 634886261. The reversal of 634886249 is 942688436.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (634886237) and next prime (634886261).

It can be written as a sum of positive squares in only one way, i.e., 349951849 + 284934400 = 18707^2 + 16880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634886249 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 634886197 and 634886206.

It is not a weakly prime, because it can be changed into another prime (634886269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317443124 + 317443125.

It is an arithmetic number, because the mean of its divisors is an integer number (317443125).

Almost surely, 2^634886249 is an apocalyptic number.

It is an amenable number.

634886249 is a deficient number, since it is larger than the sum of its proper divisors (1).

634886249 is an equidigital number, since it uses as much as digits as its factorization.

634886249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1990656, while the sum is 50.

The square root of 634886249 is about 25196.9492002504. The cubic root of 634886249 is about 859.4724766460.

The spelling of 634886249 in words is "six hundred thirty-four million, eight hundred eighty-six thousand, two hundred forty-nine".