634480949 has 2 divisors, whose sum is σ = 634480950. Its totient is φ = 634480948.

The previous prime is 634480933. The next prime is 634480961. The reversal of 634480949 is 949084436.

It is a happy number.

634480949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 579942724 + 54538225 = 24082^2 + 7385^2 .

It is a cyclic number.

It is not a de Polignac number, because 634480949 - 2⁴ = 634480933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634480909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317240474 + 317240475.

It is an arithmetic number, because the mean of its divisors is an integer number (317240475).

Almost surely, 2^634480949 is an apocalyptic number.

It is an amenable number.

634480949 is a deficient number, since it is larger than the sum of its proper divisors (1).

634480949 is an equidigital number, since it uses as much as digits as its factorization.

634480949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 47.

The square root of 634480949 is about 25188.9052759345. The cubic root of 634480949 is about 859.2895471069.

The spelling of 634480949 in words is "six hundred thirty-four million, four hundred eighty thousand, nine hundred forty-nine".