447623 has 4 divisors (see below), whose sum is σ = 488328. Its totient is φ = 406920.

The previous prime is 447617. The next prime is 447637. The reversal of 447623 is 326744.

447623 = 132² + 133² + ... + 153².

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 447623 - 2¹⁶ = 382087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 447592 and 447601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447683) 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, 20336 + ... + 20357.

It is an arithmetic number, because the mean of its divisors is an integer number (122082).

2⁴⁴⁷⁶²³ is an apocalyptic number.

447623 is a deficient number, since it is larger than the sum of its proper divisors (40705).

447623 is a wasteful number, since it uses less digits than its factorization.

447623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40704.

The product of its digits is 4032, while the sum is 26.

The square root of 447623 is about 669.0463362130. The cubic root of 447623 is about 76.4957777441.

It can be divided in two parts, 44 and 7623, that added together give a palindrome (7667).

The spelling of 447623 in words is "four hundred forty-seven thousand, six hundred twenty-three".