422100409 has 4 divisors (see below), whose sum is σ = 444316240. Its totient is φ = 399884580.

The previous prime is 422100391. The next prime is 422100473. The reversal of 422100409 is 904001224.

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 422100409 - 2⁵ = 422100377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 422100409.

It is not an unprimeable number, because it can be changed into a prime (422100479) 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, 11107887 + ... + 11107924.

It is an arithmetic number, because the mean of its divisors is an integer number (111079060).

Almost surely, 2^422100409 is an apocalyptic number.

It is an amenable number.

422100409 is a deficient number, since it is larger than the sum of its proper divisors (22215831).

422100409 is a wasteful number, since it uses less digits than its factorization.

422100409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22215830.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 422100409 is about 20545.0823556393. The cubic root of 422100409 is about 750.1335519208.

The spelling of 422100409 in words is "four hundred twenty-two million, one hundred thousand, four hundred nine".