447861 has 4 divisors (see below), whose sum is σ = 597152. Its totient is φ = 298572.

The previous prime is 447859. The next prime is 447877. The reversal of 447861 is 168744.

Added to its reverse (168744) it gives a triangular number (616605 = T₁₁₁₀).

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 not a de Polignac number, because 447861 - 2¹ = 447859 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447841) 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, 74641 + ... + 74646.

It is an arithmetic number, because the mean of its divisors is an integer number (149288).

2⁴⁴⁷⁸⁶¹ is an apocalyptic number.

It is an amenable number.

447861 is a deficient number, since it is larger than the sum of its proper divisors (149291).

447861 is a wasteful number, since it uses less digits than its factorization.

447861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149290.

The product of its digits is 5376, while the sum is 30.

The square root of 447861 is about 669.2241776864. The cubic root of 447861 is about 76.5093328782.

Adding to 447861 its reverse (168744), we get a triangular number (616605 = T₁₁₁₀).

The spelling of 447861 in words is "four hundred forty-seven thousand, eight hundred sixty-one".