450404920 has 64 divisors (see below), whose sum is σ = 1160153280. Its totient is φ = 154162176.

The previous prime is 450404917. The next prime is 450404923. The reversal of 450404920 is 29404054.

It is an interprime number because it is at equal distance from previous prime (450404917) and next prime (450404923).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450404923) 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, 239022 + ... + 240898.

It is an arithmetic number, because the mean of its divisors is an integer number (18127395).

Almost surely, 2^450404920 is an apocalyptic number.

450404920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

450404920 is an abundant number, since it is smaller than the sum of its proper divisors (709748360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

450404920 is a wasteful number, since it uses less digits than its factorization.

450404920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752 (or 2748 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 450404920 is about 21222.7453455014. The cubic root of 450404920 is about 766.5392109062.

Adding to 450404920 its reverse (29404054), we get a palindrome (479808974).

The spelling of 450404920 in words is "four hundred fifty million, four hundred four thousand, nine hundred twenty".