447977 has 4 divisors (see below), whose sum is σ = 449616. Its totient is φ = 446340.

The previous prime is 447961. The next prime is 447983. The reversal of 447977 is 779744.

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 a cyclic number.

It is not a de Polignac number, because 447977 - 2⁴ = 447961 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 447977.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 447977.

It is not an unprimeable number, because it can be changed into a prime (447907) 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, 299 + ... + 992.

It is an arithmetic number, because the mean of its divisors is an integer number (112404).

2⁴⁴⁷⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

447977 is a deficient number, since it is larger than the sum of its proper divisors (1639).

447977 is a wasteful number, since it uses less digits than its factorization.

447977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638.

The product of its digits is 49392, while the sum is 38.

The square root of 447977 is about 669.3108395955. The cubic root of 447977 is about 76.5159378415.

The spelling of 447977 in words is "four hundred forty-seven thousand, nine hundred seventy-seven".