127906869 has 4 divisors (see below), whose sum is σ = 170542496. Its totient is φ = 85271244.

The previous prime is 127906853. The next prime is 127906871. The reversal of 127906869 is 968609721.

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 not a de Polignac number, because 127906869 - 2⁴ = 127906853 is a prime.

It is a super-2 number, since 2×127906869² = 32720334274766322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127906069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21317809 + ... + 21317814.

It is an arithmetic number, because the mean of its divisors is an integer number (42635624).

Almost surely, 2^127906869 is an apocalyptic number.

It is an amenable number.

127906869 is a deficient number, since it is larger than the sum of its proper divisors (42635627).

127906869 is an equidigital number, since it uses as much as digits as its factorization.

127906869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42635626.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 127906869 is about 11309.5919024517. The cubic root of 127906869 is about 503.8461635240.

The spelling of 127906869 in words is "one hundred twenty-seven million, nine hundred six thousand, eight hundred sixty-nine".