127573993 has 2 divisors, whose sum is σ = 127573994. Its totient is φ = 127573992.

The previous prime is 127573951. The next prime is 127574017. The reversal of 127573993 is 399375721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87086224 + 40487769 = 9332^2 + 6363^2 .

It is an emirp because it is prime and its reverse (399375721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 127573993 - 2¹⁷ = 127442921 is a prime.

It is not a weakly prime, because it can be changed into another prime (127573393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63786996 + 63786997.

It is an arithmetic number, because the mean of its divisors is an integer number (63786997).

Almost surely, 2^127573993 is an apocalyptic number.

It is an amenable number.

127573993 is a deficient number, since it is larger than the sum of its proper divisors (1).

127573993 is an equidigital number, since it uses as much as digits as its factorization.

127573993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 357210, while the sum is 46.

The square root of 127573993 is about 11294.8657805217. The cubic root of 127573993 is about 503.4086993949.

The spelling of 127573993 in words is "one hundred twenty-seven million, five hundred seventy-three thousand, nine hundred ninety-three".