411729421 has 4 divisors (see below), whose sum is σ = 421771644. Its totient is φ = 401687200.

The previous prime is 411729359. The next prime is 411729433. The reversal of 411729421 is 124927114.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122899396 + 288830025 = 11086^2 + 16995^2 .

It is a cyclic number.

It is not a de Polignac number, because 411729421 - 2⁷ = 411729293 is a prime.

It is a super-2 number, since 2×411729421² = 339042232233990482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (411729121) 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, 5021050 + ... + 5021131.

It is an arithmetic number, because the mean of its divisors is an integer number (105442911).

Almost surely, 2^411729421 is an apocalyptic number.

411729421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

411729421 is a deficient number, since it is larger than the sum of its proper divisors (10042223).

411729421 is a wasteful number, since it uses less digits than its factorization.

411729421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10042222.

The product of its digits is 4032, while the sum is 31.

The square root of 411729421 is about 20291.1168002158. The cubic root of 411729421 is about 743.9389553000.

The spelling of 411729421 in words is "four hundred eleven million, seven hundred twenty-nine thousand, four hundred twenty-one".