451469421 has 24 divisors (see below), whose sum is σ = 705342456. Its totient is φ = 276618240.

The previous prime is 451469407. The next prime is 451469429. The reversal of 451469421 is 124964154.

It can be written as a sum of positive squares in 4 ways, for example, as 27562500 + 423906921 = 5250^2 + 20589^2 .

It is not a de Polignac number, because 451469421 - 2¹³ = 451461229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451469429) 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, 18981 + ... + 35541.

It is an arithmetic number, because the mean of its divisors is an integer number (29389269).

Almost surely, 2^451469421 is an apocalyptic number.

It is an amenable number.

451469421 is a deficient number, since it is larger than the sum of its proper divisors (253873035).

451469421 is a wasteful number, since it uses less digits than its factorization.

451469421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16813 (or 16810 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 451469421 is about 21247.8097930116. The cubic root of 451469421 is about 767.1426233203.

The spelling of 451469421 in words is "four hundred fifty-one million, four hundred sixty-nine thousand, four hundred twenty-one".