450669021 has 16 divisors (see below), whose sum is σ = 664754688. Its totient is φ = 269284400.

The previous prime is 450668989. The next prime is 450669029. The reversal of 450669021 is 120966054.

It is not a de Polignac number, because 450669021 - 2⁵ = 450668989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450669029) 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, 93831 + ... + 98516.

It is an arithmetic number, because the mean of its divisors is an integer number (41547168).

Almost surely, 2^450669021 is an apocalyptic number.

It is an amenable number.

450669021 is a deficient number, since it is larger than the sum of its proper divisors (214085667).

450669021 is a wasteful number, since it uses less digits than its factorization.

450669021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192432.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 450669021 is about 21228.9665551576. The cubic root of 450669021 is about 766.6890051672.

The spelling of 450669021 in words is "four hundred fifty million, six hundred sixty-nine thousand, twenty-one".