995667979 has 2 divisors, whose sum is σ = 995667980. Its totient is φ = 995667978.

The previous prime is 995667971. The next prime is 995667997. The reversal of 995667979 is 979766599.

Together with next prime (995667997) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 995667979 - 2³ = 995667971 is a prime.

It is not a weakly prime, because it can be changed into another prime (995667971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497833989 + 497833990.

It is an arithmetic number, because the mean of its divisors is an integer number (497833990).

Almost surely, 2^995667979 is an apocalyptic number.

995667979 is a deficient number, since it is larger than the sum of its proper divisors (1).

995667979 is an equidigital number, since it uses as much as digits as its factorization.

995667979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57868020, while the sum is 67.

The square root of 995667979 is about 31554.2069936799. The cubic root of 995667979 is about 998.5539028109.

The spelling of 995667979 in words is "nine hundred ninety-five million, six hundred sixty-seven thousand, nine hundred seventy-nine".