440487427 has 2 divisors, whose sum is σ = 440487428. Its totient is φ = 440487426.

The previous prime is 440487389. The next prime is 440487449. The reversal of 440487427 is 724784044.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440487427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 440487427.

It is not a weakly prime, because it can be changed into another prime (440487457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220243713 + 220243714.

It is an arithmetic number, because the mean of its divisors is an integer number (220243714).

Almost surely, 2^440487427 is an apocalyptic number.

440487427 is a deficient number, since it is larger than the sum of its proper divisors (1).

440487427 is an equidigital number, since it uses as much as digits as its factorization.

440487427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 200704, while the sum is 40.

The square root of 440487427 is about 20987.7923326871. The cubic root of 440487427 is about 760.8712463404.

The spelling of 440487427 in words is "four hundred forty million, four hundred eighty-seven thousand, four hundred twenty-seven".