421374189 has 32 divisors (see below), whose sum is σ = 609140736. Its totient is φ = 258128640.

The previous prime is 421374181. The next prime is 421374193. The reversal of 421374189 is 981473124.

It is not a de Polignac number, because 421374189 - 2³ = 421374181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421374181) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 433474 + ... + 434444.

It is an arithmetic number, because the mean of its divisors is an integer number (19035648).

Almost surely, 2^421374189 is an apocalyptic number.

It is an amenable number.

421374189 is a deficient number, since it is larger than the sum of its proper divisors (187766547).

421374189 is a wasteful number, since it uses less digits than its factorization.

421374189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185.

The product of its digits is 48384, while the sum is 39.

The square root of 421374189 is about 20527.4009314380. The cubic root of 421374189 is about 749.7031055982.

The spelling of 421374189 in words is "four hundred twenty-one million, three hundred seventy-four thousand, one hundred eighty-nine".