420580439 has 4 divisors (see below), whose sum is σ = 423892224. Its totient is φ = 417268656.

The previous prime is 420580399. The next prime is 420580471. The reversal of 420580439 is 934085024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420580439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420580399 and 420580408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420580639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1655702 + ... + 1655955.

It is an arithmetic number, because the mean of its divisors is an integer number (105973056).

Almost surely, 2^420580439 is an apocalyptic number.

420580439 is a deficient number, since it is larger than the sum of its proper divisors (3311785).

420580439 is a wasteful number, since it uses less digits than its factorization.

420580439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311784.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 420580439 is about 20508.0579041507. The cubic root of 420580439 is about 749.2320667137.

The spelling of 420580439 in words is "four hundred twenty million, five hundred eighty thousand, four hundred thirty-nine".