450758421 has 6 divisors (see below), whose sum is σ = 651095510. Its totient is φ = 300505608.

The previous prime is 450758401. The next prime is 450758431. The reversal of 450758421 is 124857054.

450758421 is a `hidden beast` number, since 4 + 50 + 7 + 584 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 309267396 + 141491025 = 17586^2 + 11895^2 .

It is not a de Polignac number, because 450758421 - 2¹⁷ = 450627349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450758401) 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, 25042126 + ... + 25042143.

Almost surely, 2^450758421 is an apocalyptic number.

It is an amenable number.

450758421 is a deficient number, since it is larger than the sum of its proper divisors (200337089).

450758421 is a wasteful number, since it uses less digits than its factorization.

450758421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50084275 (or 50084272 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 450758421 is about 21231.0720643118. The cubic root of 450758421 is about 766.7396982939.

The spelling of 450758421 in words is "four hundred fifty million, seven hundred fifty-eight thousand, four hundred twenty-one".