447228563440 has 40 divisors (see below), whose sum is σ = 1040243563008. Its totient is φ = 178816216320.

The previous prime is 447228563399. The next prime is 447228563449. The reversal of 447228563440 is 44365822744.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×447228563440² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447228563449) 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, 983472 + ... + 1364431.

Almost surely, 2^447228563440 is an apocalyptic number.

447228563440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

447228563440 is an abundant number, since it is smaller than the sum of its proper divisors (593014999568).

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

447228563440 is a wasteful number, since it uses less digits than its factorization.

447228563440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2350297 (or 2350291 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 49.

The spelling of 447228563440 in words is "four hundred forty-seven billion, two hundred twenty-eight million, five hundred sixty-three thousand, four hundred forty".