20092439 has 2 divisors, whose sum is σ = 20092440. Its totient is φ = 20092438.

The previous prime is 20092427. The next prime is 20092469. The reversal of 20092439 is 93429002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20092439 - 2⁸ = 20092183 is a prime.

It is a super-2 number, since 2×20092439² = 807412209937442, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20092469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10046219 + 10046220.

It is an arithmetic number, because the mean of its divisors is an integer number (10046220).

Almost surely, 2^20092439 is an apocalyptic number.

20092439 is a deficient number, since it is larger than the sum of its proper divisors (1).

20092439 is an equidigital number, since it uses as much as digits as its factorization.

20092439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 20092439 is about 4482.4590349495. The cubic root of 20092439 is about 271.8593157641.

The spelling of 20092439 in words is "twenty million, ninety-two thousand, four hundred thirty-nine".