424139789 has 2 divisors, whose sum is σ = 424139790. Its totient is φ = 424139788.

The previous prime is 424139777. The next prime is 424139801. The reversal of 424139789 is 987931424.

It is a balanced prime because it is at equal distance from previous prime (424139777) and next prime (424139801).

It can be written as a sum of positive squares in only one way, i.e., 360810025 + 63329764 = 18995^2 + 7958^2 .

It is a cyclic number.

It is not a de Polignac number, because 424139789 - 2²⁰ = 423091213 is a prime.

It is a super-2 number, since 2×424139789² = 359789121225929042, 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 (424139719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212069894 + 212069895.

It is an arithmetic number, because the mean of its divisors is an integer number (212069895).

Almost surely, 2^424139789 is an apocalyptic number.

It is an amenable number.

424139789 is a deficient number, since it is larger than the sum of its proper divisors (1).

424139789 is an equidigital number, since it uses as much as digits as its factorization.

424139789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 424139789 is about 20594.6543792315. The cubic root of 424139789 is about 751.3397026892.

The spelling of 424139789 in words is "four hundred twenty-four million, one hundred thirty-nine thousand, seven hundred eighty-nine".