20434079 has 2 divisors, whose sum is σ = 20434080. Its totient is φ = 20434078.

The previous prime is 20434069. The next prime is 20434081. The reversal of 20434079 is 97043402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20434079 - 2⁸ = 20433823 is a prime.

Together with 20434081, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20434069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10217039 + 10217040.

It is an arithmetic number, because the mean of its divisors is an integer number (10217040).

Almost surely, 2^20434079 is an apocalyptic number.

20434079 is a deficient number, since it is larger than the sum of its proper divisors (1).

20434079 is an equidigital number, since it uses as much as digits as its factorization.

20434079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 20434079 is about 4520.4069507070. The cubic root of 20434079 is about 273.3915093633.

The spelling of 20434079 in words is "twenty million, four hundred thirty-four thousand, seventy-nine".