20079427 has 2 divisors, whose sum is σ = 20079428. Its totient is φ = 20079426.

The previous prime is 20079403. The next prime is 20079457. The reversal of 20079427 is 72497002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20079427 - 2¹⁵ = 20046659 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20079457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10039713 + 10039714.

It is an arithmetic number, because the mean of its divisors is an integer number (10039714).

Almost surely, 2^20079427 is an apocalyptic number.

20079427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20079427 is an equidigital number, since it uses as much as digits as its factorization.

20079427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 20079427 is about 4481.0073644215. The cubic root of 20079427 is about 271.8006171111.

The spelling of 20079427 in words is "twenty million, seventy-nine thousand, four hundred twenty-seven".