127763993 has 8 divisors (see below), whose sum is σ = 154605312. Its totient is φ = 103070016.

The previous prime is 127763983. The next prime is 127764017. The reversal of 127763993 is 399367721.

It is a happy number.

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

It is not a de Polignac number, because 127763993 - 2⁶ = 127763929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127763953) 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, 536705 + ... + 536942.

It is an arithmetic number, because the mean of its divisors is an integer number (19325664).

Almost surely, 2^127763993 is an apocalyptic number.

It is an amenable number.

127763993 is a deficient number, since it is larger than the sum of its proper divisors (26841319).

127763993 is a wasteful number, since it uses less digits than its factorization.

127763993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073671.

The product of its digits is 428652, while the sum is 47.

The square root of 127763993 is about 11303.2735523830. The cubic root of 127763993 is about 503.6584896178.

The spelling of 127763993 in words is "one hundred twenty-seven million, seven hundred sixty-three thousand, nine hundred ninety-three".