451849 has 4 divisors (see below), whose sum is σ = 467460. Its totient is φ = 436240.

The previous prime is 451837. The next prime is 451859. The reversal of 451849 is 948154.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 948154 = 2 ⋅474077.

It can be written as a sum of positive squares in 2 ways, for example, as 186624 + 265225 = 432^2 + 515^2 .

It is a cyclic number.

It is not a de Polignac number, because 451849 - 2⁹ = 451337 is a prime.

It is a Smith number, since the sum of its digits (31) 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 self number, because there is not a number n which added to its sum of digits gives 451849.

It is not an unprimeable number, because it can be changed into a prime (451859) 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, 7762 + ... + 7819.

It is an arithmetic number, because the mean of its divisors is an integer number (116865).

2⁴⁵¹⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

451849 is a deficient number, since it is larger than the sum of its proper divisors (15611).

451849 is a wasteful number, since it uses less digits than its factorization.

451849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15610.

The product of its digits is 5760, while the sum is 31.

The square root of 451849 is about 672.1971437012. The cubic root of 451849 is about 76.7357558261.

The spelling of 451849 in words is "four hundred fifty-one thousand, eight hundred forty-nine".