425194439 has 2 divisors, whose sum is σ = 425194440. Its totient is φ = 425194438.

The previous prime is 425194411. The next prime is 425194447. The reversal of 425194439 is 934491524.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425194439 - 2⁸ = 425194183 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 425194396 and 425194405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425194489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212597219 + 212597220.

It is an arithmetic number, because the mean of its divisors is an integer number (212597220).

Almost surely, 2^425194439 is an apocalyptic number.

425194439 is a deficient number, since it is larger than the sum of its proper divisors (1).

425194439 is an equidigital number, since it uses as much as digits as its factorization.

425194439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 41.

The square root of 425194439 is about 20620.2434272731. The cubic root of 425194439 is about 751.9619382190.

The spelling of 425194439 in words is "four hundred twenty-five million, one hundred ninety-four thousand, four hundred thirty-nine".