127633489 has 2 divisors, whose sum is σ = 127633490. Its totient is φ = 127633488.

The previous prime is 127633483. The next prime is 127633523. The reversal of 127633489 is 984336721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123032464 + 4601025 = 11092^2 + 2145^2 .

It is a cyclic number.

It is not a de Polignac number, because 127633489 - 2⁷ = 127633361 is a prime.

It is not a weakly prime, because it can be changed into another prime (127633483) 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, 63816744 + 63816745.

It is an arithmetic number, because the mean of its divisors is an integer number (63816745).

Almost surely, 2^127633489 is an apocalyptic number.

It is an amenable number.

127633489 is a deficient number, since it is larger than the sum of its proper divisors (1).

127633489 is an equidigital number, since it uses as much as digits as its factorization.

127633489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 127633489 is about 11297.4992365567. The cubic root of 127633489 is about 503.4869445724.

It can be divided in two parts, 127 and 633489, that added together give a square (633616 = 796²).

The spelling of 127633489 in words is "one hundred twenty-seven million, six hundred thirty-three thousand, four hundred eighty-nine".