405486841 has 4 divisors (see below), whose sum is σ = 406366884. Its totient is φ = 404606800.

The previous prime is 405486833. The next prime is 405486853. The reversal of 405486841 is 148684504.

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 285474816 + 120012025 = 16896^2 + 10955^2 .

It is a cyclic number.

It is not a de Polignac number, because 405486841 - 2³ = 405486833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405486794 and 405486803.

It is not an unprimeable number, because it can be changed into a prime (405484841) 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, 439330 + ... + 440251.

It is an arithmetic number, because the mean of its divisors is an integer number (101591721).

Almost surely, 2^405486841 is an apocalyptic number.

It is an amenable number.

405486841 is a deficient number, since it is larger than the sum of its proper divisors (880043).

405486841 is an equidigital number, since it uses as much as digits as its factorization.

405486841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880042.

The product of its (nonzero) digits is 122880, while the sum is 40.

The square root of 405486841 is about 20136.7038265949. The cubic root of 405486841 is about 740.1599611587.

The spelling of 405486841 in words is "four hundred five million, four hundred eighty-six thousand, eight hundred forty-one".