409411021 has 8 divisors (see below), whose sum is σ = 412784064. Its totient is φ = 406049280.

The previous prime is 409411007. The next prime is 409411027. The reversal of 409411021 is 120114904.

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

It is a cyclic number.

It is not a de Polignac number, because 409411021 - 2¹¹ = 409408973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 409410983 and 409411001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409411027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79501 + ... + 84493.

It is an arithmetic number, because the mean of its divisors is an integer number (51598008).

Almost surely, 2^409411021 is an apocalyptic number.

It is an amenable number.

409411021 is a deficient number, since it is larger than the sum of its proper divisors (3373043).

409411021 is a wasteful number, since it uses less digits than its factorization.

409411021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5651.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 409411021 is about 20233.9077046427. The cubic root of 409411021 is about 742.5399819001.

Adding to 409411021 its reverse (120114904), we get a palindrome (529525925).

The spelling of 409411021 in words is "four hundred nine million, four hundred eleven thousand, twenty-one".