405054641 has 4 divisors (see below), whose sum is σ = 405367284. Its totient is φ = 404742000.

The previous prime is 405054619. The next prime is 405054653. The reversal of 405054641 is 146450504.

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 128165041 + 276889600 = 11321^2 + 16640^2 .

It is a cyclic number.

It is not a de Polignac number, because 405054641 - 2¹⁰ = 405053617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405054341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154370 + ... + 156971.

It is an arithmetic number, because the mean of its divisors is an integer number (101341821).

Almost surely, 2^405054641 is an apocalyptic number.

It is an amenable number.

405054641 is a deficient number, since it is larger than the sum of its proper divisors (312643).

405054641 is a wasteful number, since it uses less digits than its factorization.

405054641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312642.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 405054641 is about 20125.9693182714. The cubic root of 405054641 is about 739.8968939619.

The spelling of 405054641 in words is "four hundred five million, fifty-four thousand, six hundred forty-one".