127081979 has 2 divisors, whose sum is σ = 127081980. Its totient is φ = 127081978.

The previous prime is 127081963. The next prime is 127082009. The reversal of 127081979 is 979180721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 127081979 - 2⁴ = 127081963 is a prime.

It is a super-2 number, since 2×127081979² = 32299658773112882, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (127081909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63540989 + 63540990.

It is an arithmetic number, because the mean of its divisors is an integer number (63540990).

Almost surely, 2^127081979 is an apocalyptic number.

127081979 is a deficient number, since it is larger than the sum of its proper divisors (1).

127081979 is an equidigital number, since it uses as much as digits as its factorization.

127081979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 44.

The square root of 127081979 is about 11273.0643127767. The cubic root of 127081979 is about 502.7607010058.

The spelling of 127081979 in words is "one hundred twenty-seven million, eighty-one thousand, nine hundred seventy-nine".