628848949 has 2 divisors, whose sum is σ = 628848950. Its totient is φ = 628848948.

The previous prime is 628848907. The next prime is 628848967. The reversal of 628848949 is 949848826.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 499299025 + 129549924 = 22345^2 + 11382^2 .

It is a cyclic number.

It is not a de Polignac number, because 628848949 - 2⁷ = 628848821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 628848893 and 628848902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628848749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314424474 + 314424475.

It is an arithmetic number, because the mean of its divisors is an integer number (314424475).

Almost surely, 2^628848949 is an apocalyptic number.

It is an amenable number.

628848949 is a deficient number, since it is larger than the sum of its proper divisors (1).

628848949 is an equidigital number, since it uses as much as digits as its factorization.

628848949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7962624, while the sum is 58.

The square root of 628848949 is about 25076.8608282616. The cubic root of 628848949 is about 856.7394788568.

The spelling of 628848949 in words is "six hundred twenty-eight million, eight hundred forty-eight thousand, nine hundred forty-nine".