411921641 has 4 divisors (see below), whose sum is σ = 412261332. Its totient is φ = 411581952.

The previous prime is 411921619. The next prime is 411921649. The reversal of 411921641 is 146129114.

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 212547241 + 199374400 = 14579^2 + 14120^2 .

It is a cyclic number.

It is not a de Polignac number, because 411921641 - 2²⁶ = 344812777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (411921649) 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, 168020 + ... + 170453.

It is an arithmetic number, because the mean of its divisors is an integer number (103065333).

Almost surely, 2^411921641 is an apocalyptic number.

It is an amenable number.

411921641 is a deficient number, since it is larger than the sum of its proper divisors (339691).

411921641 is a wasteful number, since it uses less digits than its factorization.

411921641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339690.

The product of its digits is 1728, while the sum is 29.

The square root of 411921641 is about 20295.8528029743. The cubic root of 411921641 is about 744.0547090700.

The spelling of 411921641 in words is "four hundred eleven million, nine hundred twenty-one thousand, six hundred forty-one".