447973236 has 18 divisors (see below), whose sum is σ = 1132376882. Its totient is φ = 149324400.

The previous prime is 447973217. The next prime is 447973247. The reversal of 447973236 is 632379744.

It can be written as a sum of positive squares in only one way, i.e., 447576336 + 396900 = 21156^2 + 630^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 447973191 and 447973200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6221815 + ... + 6221886.

Almost surely, 2^447973236 is an apocalyptic number.

It is an amenable number.

447973236 is an abundant number, since it is smaller than the sum of its proper divisors (684403646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

447973236 is a wasteful number, since it uses less digits than its factorization.

447973236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12443711 (or 12443706 counting only the distinct ones).

The product of its digits is 762048, while the sum is 45.

The square root of 447973236 is about 21165.3782390015. The cubic root of 447973236 is about 765.1572353977.

The spelling of 447973236 in words is "four hundred forty-seven million, nine hundred seventy-three thousand, two hundred thirty-six".