406465817 has 8 divisors (see below), whose sum is σ = 408285000. Its totient is φ = 404651520.

The previous prime is 406465811. The next prime is 406465819. The reversal of 406465817 is 718564604.

It can be written as a sum of positive squares in 4 ways, for example, as 30261001 + 376204816 = 5501^2 + 19396^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 406465817 - 2⁸ = 406465561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406465811) 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 7 ways as a sum of consecutive naturals, for example, 324809 + ... + 326057.

It is an arithmetic number, because the mean of its divisors is an integer number (51035625).

Almost surely, 2^406465817 is an apocalyptic number.

It is an amenable number.

406465817 is a deficient number, since it is larger than the sum of its proper divisors (1819183).

406465817 is a wasteful number, since it uses less digits than its factorization.

406465817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 406465817 is about 20160.9974207627. The cubic root of 406465817 is about 740.7551440413.

The spelling of 406465817 in words is "four hundred six million, four hundred sixty-five thousand, eight hundred seventeen".