20112839 has 2 divisors, whose sum is σ = 20112840. Its totient is φ = 20112838.

The previous prime is 20112821. The next prime is 20112857. The reversal of 20112839 is 93821102.

It is a balanced prime because it is at equal distance from previous prime (20112821) and next prime (20112857).

It is a cyclic number.

It is not a de Polignac number, because 20112839 - 2²⁴ = 3335623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056419 + 10056420.

It is an arithmetic number, because the mean of its divisors is an integer number (10056420).

Almost surely, 2^20112839 is an apocalyptic number.

20112839 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112839 is an equidigital number, since it uses as much as digits as its factorization.

20112839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 20112839 is about 4484.7339943412. The cubic root of 20112839 is about 271.9512915592.

The spelling of 20112839 in words is "twenty million, one hundred twelve thousand, eight hundred thirty-nine".