20379259 has 2 divisors, whose sum is σ = 20379260. Its totient is φ = 20379258.

The previous prime is 20379251. The next prime is 20379283. The reversal of 20379259 is 95297302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20379259 - 2³ = 20379251 is a prime.

It is not a weakly prime, because it can be changed into another prime (20379251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10189629 + 10189630.

It is an arithmetic number, because the mean of its divisors is an integer number (10189630).

Almost surely, 2^20379259 is an apocalyptic number.

20379259 is a deficient number, since it is larger than the sum of its proper divisors (1).

20379259 is an equidigital number, since it uses as much as digits as its factorization.

20379259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 20379259 is about 4514.3392650531. The cubic root of 20379259 is about 273.1468079328.

The spelling of 20379259 in words is "twenty million, three hundred seventy-nine thousand, two hundred fifty-nine".