1447749005 has 4 divisors (see below), whose sum is σ = 1737298812. Its totient is φ = 1158199200.

The previous prime is 1447748999. The next prime is 1447749029. The reversal of 1447749005 is 5009477441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 333391081 + 1114357924 = 18259^2 + 33382^2 .

It is not a de Polignac number, because 1447749005 - 2⁸ = 1447748749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144774896 + ... + 144774905.

It is an arithmetic number, because the mean of its divisors is an integer number (434324703).

Almost surely, 2^1447749005 is an apocalyptic number.

It is an amenable number.

1447749005 is a deficient number, since it is larger than the sum of its proper divisors (289549807).

1447749005 is an equidigital number, since it uses as much as digits as its factorization.

1447749005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289549806.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 1447749005 is about 38049.2970368705. The cubic root of 1447749005 is about 1131.2651934510.

The spelling of 1447749005 in words is "one billion, four hundred forty-seven million, seven hundred forty-nine thousand, five".