27970079 has 2 divisors, whose sum is σ = 27970080. Its totient is φ = 27970078.

The previous prime is 27970069. The next prime is 27970097. The reversal of 27970079 is 97007972.

It is a happy number.

Together with next prime (27970097) 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 a de Polignac number, because none of the positive numbers 2^k-27970079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27970009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13985039 + 13985040.

It is an arithmetic number, because the mean of its divisors is an integer number (13985040).

Almost surely, 2^27970079 is an apocalyptic number.

27970079 is a deficient number, since it is larger than the sum of its proper divisors (1).

27970079 is an equidigital number, since it uses as much as digits as its factorization.

27970079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55566, while the sum is 41.

The square root of 27970079 is about 5288.6745976662. The cubic root of 27970079 is about 303.5506946142.

The spelling of 27970079 in words is "twenty-seven million, nine hundred seventy thousand, seventy-nine".