447920880 has 80 divisors (see below), whose sum is σ = 1514795904. Its totient is φ = 108586240.

The previous prime is 447920807. The next prime is 447920897. The reversal of 447920880 is 88029744.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×447920880² = 401266229479948800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82194 + ... + 87473.

Almost surely, 2^447920880 is an apocalyptic number.

447920880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

447920880 is an abundant number, since it is smaller than the sum of its proper divisors (1066875024).

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

447920880 is a wasteful number, since it uses less digits than its factorization.

447920880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169694 (or 169688 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 447920880 is about 21164.1413716692. The cubic root of 447920880 is about 765.1274254822.

The spelling of 447920880 in words is "four hundred forty-seven million, nine hundred twenty thousand, eight hundred eighty".