408576961 has 4 divisors (see below), whose sum is σ = 440005972. Its totient is φ = 377147952.

The previous prime is 408576913. The next prime is 408576983. The reversal of 408576961 is 169675804.

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 257409936 + 151167025 = 16044^2 + 12295^2 .

It is a cyclic number.

It is not a de Polignac number, because 408576961 - 2⁹ = 408576449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (408576061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15714486 + ... + 15714511.

It is an arithmetic number, because the mean of its divisors is an integer number (110001493).

Almost surely, 2^408576961 is an apocalyptic number.

It is an amenable number.

408576961 is a deficient number, since it is larger than the sum of its proper divisors (31429011).

408576961 is a wasteful number, since it uses less digits than its factorization.

408576961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31429010.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 408576961 is about 20213.2867441196. The cubic root of 408576961 is about 742.0354001899.

The spelling of 408576961 in words is "four hundred eight million, five hundred seventy-six thousand, nine hundred sixty-one".