406464489 has 6 divisors (see below), whose sum is σ = 587115386. Its totient is φ = 270976320.

The previous prime is 406464479. The next prime is 406464491. The reversal of 406464489 is 984464604.

It can be written as a sum of positive squares in only one way, i.e., 349989264 + 56475225 = 18708^2 + 7515^2 .

It is not a de Polignac number, because 406464489 - 2⁹ = 406463977 is a prime.

It is a super-2 number, since 2×406464489² = 330426761636062242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (406464439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22581352 + ... + 22581369.

Almost surely, 2^406464489 is an apocalyptic number.

It is an amenable number.

406464489 is a deficient number, since it is larger than the sum of its proper divisors (180650897).

406464489 is a wasteful number, since it uses less digits than its factorization.

406464489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45162727 (or 45162724 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The square root of 406464489 is about 20160.9644858573. The cubic root of 406464489 is about 740.7543373118.

The spelling of 406464489 in words is "four hundred six million, four hundred sixty-four thousand, four hundred eighty-nine".