406469217 has 16 divisors (see below), whose sum is σ = 675689472. Its totient is φ = 211152720.

The previous prime is 406469197. The next prime is 406469227. The reversal of 406469217 is 712964604.

It is a happy number.

It is not a de Polignac number, because 406469217 - 2¹¹ = 406467169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406469227) 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 15 ways as a sum of consecutive naturals, for example, 879573 + ... + 880034.

It is an arithmetic number, because the mean of its divisors is an integer number (42230592).

Almost surely, 2^406469217 is an apocalyptic number.

It is an amenable number.

406469217 is a deficient number, since it is larger than the sum of its proper divisors (269220255).

406469217 is a wasteful number, since it uses less digits than its factorization.

406469217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759628.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 406469217 is about 20161.0817418114. The cubic root of 406469217 is about 740.7572094552.

The spelling of 406469217 in words is "four hundred six million, four hundred sixty-nine thousand, two hundred seventeen".