447740 has 24 divisors (see below), whose sum is σ = 958272. Its totient is φ = 175680.

The previous prime is 447703. The next prime is 447743. The reversal of 447740 is 47744.

It is a super-2 number, since 2×447740² = 400942215200, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 447740.

It is not an unprimeable number, because it can be changed into a prime (447743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037 + ... + 1403.

It is an arithmetic number, because the mean of its divisors is an integer number (39928).

2⁴⁴⁷⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

447740 is an abundant number, since it is smaller than the sum of its proper divisors (510532).

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

447740 is a wasteful number, since it uses less digits than its factorization.

447740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 447740 is about 669.1337683901. The cubic root of 447740 is about 76.5024420027.

The spelling of 447740 in words is "four hundred forty-seven thousand, seven hundred forty", and thus it is an iban number.