127399097 has 4 divisors (see below), whose sum is σ = 145598976. Its totient is φ = 109199220.

The previous prime is 127399087. The next prime is 127399099. The reversal of 127399097 is 790993721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 127399097 - 2⁴ = 127399081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (127399099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9099929 + ... + 9099942.

It is an arithmetic number, because the mean of its divisors is an integer number (36399744).

Almost surely, 2^127399097 is an apocalyptic number.

It is an amenable number.

127399097 is a deficient number, since it is larger than the sum of its proper divisors (18199879).

127399097 is an equidigital number, since it uses as much as digits as its factorization.

127399097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18199878.

The product of its (nonzero) digits is 214326, while the sum is 47.

The square root of 127399097 is about 11287.1208463452. The cubic root of 127399097 is about 503.1785468619.

The spelling of 127399097 in words is "one hundred twenty-seven million, three hundred ninety-nine thousand, ninety-seven".