1447969680 has 60 divisors (see below), whose sum is σ = 4862767260. Its totient is φ = 386125056.

The previous prime is 1447969657. The next prime is 1447969687. The reversal of 1447969680 is 869697441.

1447969680 is a `hidden beast` number, since 1 + 4 + 479 + 6 + 96 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 781090704 + 666878976 = 27948^2 + 25824^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (1447969687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1004815 + ... + 1006254.

It is an arithmetic number, because the mean of its divisors is an integer number (81046121).

Almost surely, 2^1447969680 is an apocalyptic number.

1447969680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1447969680 is an abundant number, since it is smaller than the sum of its proper divisors (3414797580).

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

1447969680 is a wasteful number, since it uses less digits than its factorization.

1447969680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011088 (or 2011079 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 1447969680 is about 38052.1967828403. The cubic root of 1447969680 is about 1131.3226687138.

The spelling of 1447969680 in words is "one billion, four hundred forty-seven million, nine hundred sixty-nine thousand, six hundred eighty".