447775238 has 4 divisors (see below), whose sum is σ = 671662860. Its totient is φ = 223887618.

The previous prime is 447775193. The next prime is 447775241. The reversal of 447775238 is 832577744.

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

It is a junction number, because it is equal to n+sod(n) for n = 447775192 and 447775201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111943808 + ... + 111943811.

It is an arithmetic number, because the mean of its divisors is an integer number (167915715).

Almost surely, 2^447775238 is an apocalyptic number.

447775238 is a deficient number, since it is larger than the sum of its proper divisors (223887622).

447775238 is a wasteful number, since it uses less digits than its factorization.

447775238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223887621.

The product of its digits is 1317120, while the sum is 47.

The square root of 447775238 is about 21160.7003192238. The cubic root of 447775238 is about 765.0444891324.

The spelling of 447775238 in words is "four hundred forty-seven million, seven hundred seventy-five thousand, two hundred thirty-eight".