451947 has 4 divisors (see below), whose sum is σ = 602600. Its totient is φ = 301296.

The previous prime is 451939. The next prime is 451961. The reversal of 451947 is 749154.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 451947 - 2³ = 451939 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (451937) 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, 75322 + ... + 75327.

It is an arithmetic number, because the mean of its divisors is an integer number (150650).

2⁴⁵¹⁹⁴⁷ is an apocalyptic number.

451947 is a deficient number, since it is larger than the sum of its proper divisors (150653).

451947 is a wasteful number, since it uses less digits than its factorization.

451947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150652.

The product of its digits is 5040, while the sum is 30.

The square root of 451947 is about 672.2700350306. The cubic root of 451947 is about 76.7413030779.

The spelling of 451947 in words is "four hundred fifty-one thousand, nine hundred forty-seven".