451444140 has 72 divisors (see below), whose sum is σ = 1565010720. Its totient is φ = 103186944.

The previous prime is 451444093. The next prime is 451444151. The reversal of 451444140 is 41444154.

451444140 is a `hidden beast` number, since 4 + 514 + 4 + 4 + 140 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177885 + ... + 180404.

It is an arithmetic number, because the mean of its divisors is an integer number (21736260).

Almost surely, 2^451444140 is an apocalyptic number.

It is an amenable number.

451444140 is an abundant number, since it is smaller than the sum of its proper divisors (1113566580).

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

451444140 is a wasteful number, since it uses less digits than its factorization.

451444140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358311 (or 358306 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 451444140 is about 21247.2148763079. The cubic root of 451444140 is about 767.1283037867.

Adding to 451444140 its reverse (41444154), we get a palindrome (492888294).

It can be divided in two parts, 451444 and 140, that added together give a square (451584 = 672²).

The spelling of 451444140 in words is "four hundred fifty-one million, four hundred forty-four thousand, one hundred forty".