20086739 has 2 divisors, whose sum is σ = 20086740. Its totient is φ = 20086738.

The previous prime is 20086709. The next prime is 20086757. The reversal of 20086739 is 93768002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20086739 - 2¹⁶ = 20021203 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20086699 and 20086708.

It is not a weakly prime, because it can be changed into another prime (20086709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10043369 + 10043370.

It is an arithmetic number, because the mean of its divisors is an integer number (10043370).

Almost surely, 2^20086739 is an apocalyptic number.

20086739 is a deficient number, since it is larger than the sum of its proper divisors (1).

20086739 is an equidigital number, since it uses as much as digits as its factorization.

20086739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 20086739 is about 4481.8231781274. The cubic root of 20086739 is about 271.8336055179.

The spelling of 20086739 in words is "twenty million, eighty-six thousand, seven hundred thirty-nine".