1447799680 has 64 divisors (see below), whose sum is σ = 3541705200. Its totient is φ = 565641216.

The previous prime is 1447799671. The next prime is 1447799687. The reversal of 1447799680 is 869977441.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1447799680² = 4192247826816204800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1447799687) 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, 1216 + ... + 53824.

Almost surely, 2^1447799680 is an apocalyptic number.

1447799680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1447799680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1770852600).

1447799680 is an abundant number, since it is smaller than the sum of its proper divisors (2093905520).

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

1447799680 is an equidigital number, since it uses as much as digits as its factorization.

1447799680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52671 (or 52659 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 55.

The square root of 1447799680 is about 38049.9629434774. The cubic root of 1447799680 is about 1131.2783923767.

The spelling of 1447799680 in words is "one billion, four hundred forty-seven million, seven hundred ninety-nine thousand, six hundred eighty".