127822993 has 2 divisors, whose sum is σ = 127822994. Its totient is φ = 127822992.

The previous prime is 127822987. The next prime is 127823023. The reversal of 127822993 is 399228721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99860049 + 27962944 = 9993^2 + 5288^2 .

It is a cyclic number.

It is not a de Polignac number, because 127822993 - 2¹³ = 127814801 is a prime.

It is a super-3 number, since 3×127822993³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (127822973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63911496 + 63911497.

It is an arithmetic number, because the mean of its divisors is an integer number (63911497).

Almost surely, 2^127822993 is an apocalyptic number.

It is an amenable number.

127822993 is a deficient number, since it is larger than the sum of its proper divisors (1).

127822993 is an equidigital number, since it uses as much as digits as its factorization.

127822993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 127822993 is about 11305.8831145559. The cubic root of 127822993 is about 503.7360056618.

The spelling of 127822993 in words is "one hundred twenty-seven million, eight hundred twenty-two thousand, nine hundred ninety-three".