127973993 has 8 divisors (see below), whose sum is σ = 146341440. Its totient is φ = 109627920.

The previous prime is 127973971. The next prime is 127974019. The reversal of 127973993 is 399379721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 127973993 - 2⁶ = 127973929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (127973933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10718 + ... + 19256.

It is an arithmetic number, because the mean of its divisors is an integer number (18292680).

Almost surely, 2^127973993 is an apocalyptic number.

It is an amenable number.

127973993 is a deficient number, since it is larger than the sum of its proper divisors (18367447).

127973993 is an equidigital number, since it uses as much as digits as its factorization.

127973993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10687.

The product of its digits is 642978, while the sum is 50.

The square root of 127973993 is about 11312.5590827186. The cubic root of 127973993 is about 503.9342855973.

The spelling of 127973993 in words is "one hundred twenty-seven million, nine hundred seventy-three thousand, nine hundred ninety-three".