451944229 has 4 divisors (see below), whose sum is σ = 493030080. Its totient is φ = 410858380.

The previous prime is 451944223. The next prime is 451944253. The reversal of 451944229 is 922449154.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 451944229 - 2³ = 451944221 is a prime.

It is a super-2 number, since 2×451944229² = 408507172252808882, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 451944191 and 451944200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451944221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20542909 + ... + 20542930.

It is an arithmetic number, because the mean of its divisors is an integer number (123257520).

Almost surely, 2^451944229 is an apocalyptic number.

It is an amenable number.

451944229 is a deficient number, since it is larger than the sum of its proper divisors (41085851).

451944229 is a wasteful number, since it uses less digits than its factorization.

451944229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41085850.

The product of its digits is 103680, while the sum is 40.

The square root of 451944229 is about 21258.9799614187. The cubic root of 451944229 is about 767.4114623754.

The spelling of 451944229 in words is "four hundred fifty-one million, nine hundred forty-four thousand, two hundred twenty-nine".