406477817 has 4 divisors (see below), whose sum is σ = 406657380. Its totient is φ = 406298256.

The previous prime is 406477807. The next prime is 406477843. The reversal of 406477817 is 718774604.

It is a happy number.

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 105247081 + 301230736 = 10259^2 + 17356^2 .

It is a cyclic number.

It is not a de Polignac number, because 406477817 - 2²⁸ = 138042361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406477807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86342 + ... + 90927.

It is an arithmetic number, because the mean of its divisors is an integer number (101664345).

Almost surely, 2^406477817 is an apocalyptic number.

It is an amenable number.

406477817 is a deficient number, since it is larger than the sum of its proper divisors (179563).

406477817 is a wasteful number, since it uses less digits than its factorization.

406477817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179562.

The product of its (nonzero) digits is 263424, while the sum is 44.

The square root of 406477817 is about 20161.2950228898. The cubic root of 406477817 is about 740.7624336860.

The spelling of 406477817 in words is "four hundred six million, four hundred seventy-seven thousand, eight hundred seventeen".