421413209 has 8 divisors (see below), whose sum is σ = 483899328. Its totient is φ = 359498160.

The previous prime is 421413203. The next prime is 421413241. The reversal of 421413209 is 902314124.

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

It is not a de Polignac number, because 421413209 - 2²⁸ = 152977753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421413203) 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 7 ways as a sum of consecutive naturals, for example, 141182 + ... + 144135.

It is an arithmetic number, because the mean of its divisors is an integer number (60487416).

Almost surely, 2^421413209 is an apocalyptic number.

It is an amenable number.

421413209 is a deficient number, since it is larger than the sum of its proper divisors (62486119).

421413209 is a wasteful number, since it uses less digits than its factorization.

421413209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285535.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 421413209 is about 20528.3513463697. The cubic root of 421413209 is about 749.7262461647.

The spelling of 421413209 in words is "four hundred twenty-one million, four hundred thirteen thousand, two hundred nine".