406985449 has 16 divisors (see below), whose sum is σ = 454986000. Its totient is φ = 361460736.

The previous prime is 406985431. The next prime is 406985477. The reversal of 406985449 is 944589604.

It can be written as a sum of positive squares in 8 ways, for example, as 246709849 + 160275600 = 15707^2 + 12660^2 .

It is not a de Polignac number, because 406985449 - 2²⁵ = 373431017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406985479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116277 + ... + 119725.

It is an arithmetic number, because the mean of its divisors is an integer number (28436625).

Almost surely, 2^406985449 is an apocalyptic number.

It is an amenable number.

406985449 is a deficient number, since it is larger than the sum of its proper divisors (48000551).

406985449 is a wasteful number, since it uses less digits than its factorization.

406985449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3804.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The square root of 406985449 is about 20173.8803654627. The cubic root of 406985449 is about 741.0706737842.

The spelling of 406985449 in words is "four hundred six million, nine hundred eighty-five thousand, four hundred forty-nine".