408163445 has 4 divisors (see below), whose sum is σ = 489796140. Its totient is φ = 326530752.

The previous prime is 408163409. The next prime is 408163477. The reversal of 408163445 is 544361804.

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 209409841 + 198753604 = 14471^2 + 14098^2 .

It is a cyclic number.

It is not a de Polignac number, because 408163445 - 2¹⁶ = 408097909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40816340 + ... + 40816349.

It is an arithmetic number, because the mean of its divisors is an integer number (122449035).

Almost surely, 2^408163445 is an apocalyptic number.

It is an amenable number.

408163445 is a deficient number, since it is larger than the sum of its proper divisors (81632695).

408163445 is an equidigital number, since it uses as much as digits as its factorization.

408163445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81632694.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 408163445 is about 20203.0553382403. The cubic root of 408163445 is about 741.7849805499.

The spelling of 408163445 in words is "four hundred eight million, one hundred sixty-three thousand, four hundred forty-five".