421449811 has 12 divisors (see below), whose sum is σ = 445770000. Its totient is φ = 398397168.

The previous prime is 421449767. The next prime is 421449829. The reversal of 421449811 is 118944124.

It is not a de Polignac number, because 421449811 - 2⁹ = 421449299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421449851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215265 + ... + 217213.

It is an arithmetic number, because the mean of its divisors is an integer number (37147500).

Almost surely, 2^421449811 is an apocalyptic number.

421449811 is a deficient number, since it is larger than the sum of its proper divisors (24320189).

421449811 is a wasteful number, since it uses less digits than its factorization.

421449811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586 (or 2567 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 421449811 is about 20529.2428257839. The cubic root of 421449811 is about 749.7479514530.

The spelling of 421449811 in words is "four hundred twenty-one million, four hundred forty-nine thousand, eight hundred eleven".