420069439 has 8 divisors (see below), whose sum is σ = 452319120. Its totient is φ = 388657536.

The previous prime is 420069427. The next prime is 420069449. The reversal of 420069439 is 934960024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420069439 - 2⁵ = 420069407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420069398 and 420069407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420069449) 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 7 ways as a sum of consecutive naturals, for example, 208404 + ... + 210409.

It is an arithmetic number, because the mean of its divisors is an integer number (56539890).

Almost surely, 2^420069439 is an apocalyptic number.

420069439 is a deficient number, since it is larger than the sum of its proper divisors (32249681).

420069439 is a wasteful number, since it uses less digits than its factorization.

420069439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418889.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 420069439 is about 20495.5956000308. The cubic root of 420069439 is about 748.9285078610.

The spelling of 420069439 in words is "four hundred twenty million, sixty-nine thousand, four hundred thirty-nine".