420884889 has 16 divisors (see below), whose sum is σ = 586220544. Its totient is φ = 268096400.

The previous prime is 420884873. The next prime is 420884927. The reversal of 420884889 is 988488024.

It is a cyclic number.

It is not a de Polignac number, because 420884889 - 2⁴ = 420884873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420884809) 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 15 ways as a sum of consecutive naturals, for example, 72484 + ... + 78074.

It is an arithmetic number, because the mean of its divisors is an integer number (36638784).

Almost surely, 2^420884889 is an apocalyptic number.

It is an amenable number.

420884889 is a deficient number, since it is larger than the sum of its proper divisors (165335655).

420884889 is a wasteful number, since it uses less digits than its factorization.

420884889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6708.

The product of its (nonzero) digits is 1179648, while the sum is 51.

The square root of 420884889 is about 20515.4792534808. The cubic root of 420884889 is about 749.4128079495.

The spelling of 420884889 in words is "four hundred twenty million, eight hundred eighty-four thousand, eight hundred eighty-nine".