420441986 has 8 divisors (see below), whose sum is σ = 630911820. Its totient is φ = 210138048.

The previous prime is 420441979. The next prime is 420441991. The reversal of 420441986 is 689144024.

It can be written as a sum of positive squares in 2 ways, for example, as 325983025 + 94458961 = 18055^2 + 9719^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34931 + ... + 45398.

Almost surely, 2^420441986 is an apocalyptic number.

420441986 is a deficient number, since it is larger than the sum of its proper divisors (210469834).

420441986 is a wasteful number, since it uses less digits than its factorization.

420441986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82948.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 420441986 is about 20504.6820506927. The cubic root of 420441986 is about 749.1498431939.

The spelling of 420441986 in words is "four hundred twenty million, four hundred forty-one thousand, nine hundred eighty-six".