20079377 has 2 divisors, whose sum is σ = 20079378. Its totient is φ = 20079376.

The previous prime is 20079373. The next prime is 20079403. The reversal of 20079377 is 77397002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20079361 + 16 = 4481^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 20079377 - 2² = 20079373 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20079373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10039688 + 10039689.

It is an arithmetic number, because the mean of its divisors is an integer number (10039689).

Almost surely, 2^20079377 is an apocalyptic number.

It is an amenable number.

20079377 is a deficient number, since it is larger than the sum of its proper divisors (1).

20079377 is an equidigital number, since it uses as much as digits as its factorization.

20079377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18522, while the sum is 35.

The square root of 20079377 is about 4481.0017853154. The cubic root of 20079377 is about 271.8003915063.

The spelling of 20079377 in words is "twenty million, seventy-nine thousand, three hundred seventy-seven".