451489 has 4 divisors (see below), whose sum is σ = 457920. Its totient is φ = 445060.

The previous prime is 451481. The next prime is 451499. The reversal of 451489 is 984154.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 984154 = 2 ⋅492077.

It is a cyclic number.

It is not a de Polignac number, because 451489 - 2³ = 451481 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 nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 451489.

It is not an unprimeable number, because it can be changed into a prime (451481) 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, 3109 + ... + 3250.

It is an arithmetic number, because the mean of its divisors is an integer number (114480).

2⁴⁵¹⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

451489 is a deficient number, since it is larger than the sum of its proper divisors (6431).

451489 is an equidigital number, since it uses as much as digits as its factorization.

451489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6430.

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

The square root of 451489 is about 671.9293117583. The cubic root of 451489 is about 76.7153712789.

The spelling of 451489 in words is "four hundred fifty-one thousand, four hundred eighty-nine".