1228499977 has 2 divisors, whose sum is σ = 1228499978. Its totient is φ = 1228499976.

The previous prime is 1228499971. The next prime is 1228500029. The reversal of 1228499977 is 7799948221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1108290681 + 120209296 = 33291^2 + 10964^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228499977 - 2³ = 1228499969 is a prime.

It is not a weakly prime, because it can be changed into another prime (1228499971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614249988 + 614249989.

It is an arithmetic number, because the mean of its divisors is an integer number (614249989).

Almost surely, 2^1228499977 is an apocalyptic number.

It is an amenable number.

1228499977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228499977 is an equidigital number, since it uses as much as digits as its factorization.

1228499977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 58.

The square root of 1228499977 is about 35049.9640085407. The cubic root of 1228499977 is about 1071.0055406044.

The spelling of 1228499977 in words is "one billion, two hundred twenty-eight million, four hundred ninety-nine thousand, nine hundred seventy-seven".