425043439 has 2 divisors, whose sum is σ = 425043440. Its totient is φ = 425043438.

The previous prime is 425043413. The next prime is 425043461. The reversal of 425043439 is 934340524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 425043439 - 2¹⁵ = 425010671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (425043499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212521719 + 212521720.

It is an arithmetic number, because the mean of its divisors is an integer number (212521720).

Almost surely, 2^425043439 is an apocalyptic number.

425043439 is a deficient number, since it is larger than the sum of its proper divisors (1).

425043439 is an equidigital number, since it uses as much as digits as its factorization.

425043439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 425043439 is about 20616.5816516706. The cubic root of 425043439 is about 751.8729125199.

The spelling of 425043439 in words is "four hundred twenty-five million, forty-three thousand, four hundred thirty-nine".