420420089 has 4 divisors (see below), whose sum is σ = 423204480. Its totient is φ = 417635700.

The previous prime is 420420083. The next prime is 420420097. The reversal of 420420089 is 980024024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420420089 - 2⁸ = 420419833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420420083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1391969 + ... + 1392270.

It is an arithmetic number, because the mean of its divisors is an integer number (105801120).

Almost surely, 2^420420089 is an apocalyptic number.

It is an amenable number.

420420089 is a deficient number, since it is larger than the sum of its proper divisors (2784391).

420420089 is a wasteful number, since it uses less digits than its factorization.

420420089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784390.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 420420089 is about 20504.1480925202. The cubic root of 420420089 is about 749.1368375003.

The spelling of 420420089 in words is "four hundred twenty million, four hundred twenty thousand, eighty-nine".