413956561 has 4 divisors (see below), whose sum is σ = 414003312. Its totient is φ = 413909812.

The previous prime is 413956559. The next prime is 413956573. The reversal of 413956561 is 165659314.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 165659314 = 2 ⋅82829657.

It is a cyclic number.

It is not a de Polignac number, because 413956561 - 2¹ = 413956559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (413956531) 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, 5575 + ... + 29308.

It is an arithmetic number, because the mean of its divisors is an integer number (103500828).

Almost surely, 2^413956561 is an apocalyptic number.

It is an amenable number.

413956561 is a deficient number, since it is larger than the sum of its proper divisors (46751).

413956561 is a wasteful number, since it uses less digits than its factorization.

413956561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46750.

The product of its digits is 97200, while the sum is 40.

The square root of 413956561 is about 20345.9224661847. The cubic root of 413956561 is about 745.2779234232.

The spelling of 413956561 in words is "four hundred thirteen million, nine hundred fifty-six thousand, five hundred sixty-one".