420489307 has 16 divisors (see below), whose sum is σ = 493857792. Its totient is φ = 350542080.

The previous prime is 420489263. The next prime is 420489337. The reversal of 420489307 is 703984024.

It is a happy number.

It is not a de Polignac number, because 420489307 - 2¹⁵ = 420456539 is a prime.

It is a super-2 number, since 2×420489307² = 353622514602680498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420489337) 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 in 15 ways as a sum of consecutive naturals, for example, 49707 + ... + 57547.

It is an arithmetic number, because the mean of its divisors is an integer number (30866112).

Almost surely, 2^420489307 is an apocalyptic number.

420489307 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

420489307 is a deficient number, since it is larger than the sum of its proper divisors (73368485).

420489307 is a wasteful number, since it uses less digits than its factorization.

420489307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8058.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 420489307 is about 20505.8359254140. The cubic root of 420489307 is about 749.1779478956.

The spelling of 420489307 in words is "four hundred twenty million, four hundred eighty-nine thousand, three hundred seven".