406918449 has 24 divisors (see below), whose sum is σ = 673126272. Its totient is φ = 232044480.

The previous prime is 406918441. The next prime is 406918451. The reversal of 406918449 is 944819604.

It is not a de Polignac number, because 406918449 - 2³ = 406918441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406918441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25269 + ... + 38109.

It is an arithmetic number, because the mean of its divisors is an integer number (28046928).

Almost surely, 2^406918449 is an apocalyptic number.

It is an amenable number.

406918449 is a deficient number, since it is larger than the sum of its proper divisors (266207823).

406918449 is a wasteful number, since it uses less digits than its factorization.

406918449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13357 (or 13354 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 406918449 is about 20172.2197340798. The cubic root of 406918449 is about 741.0300052868.

The spelling of 406918449 in words is "four hundred six million, nine hundred eighteen thousand, four hundred forty-nine".