1447135993 has 8 divisors (see below), whose sum is σ = 1463041800. Its totient is φ = 1431278208.

The previous prime is 1447135981. The next prime is 1447136003. The reversal of 1447135993 is 3995317441.

It can be written as a sum of positive squares in 4 ways, for example, as 322624 + 1446813369 = 568^2 + 38037^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1447135993 - 2⁵ = 1447135961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1447135913) 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, 50355 + ... + 73687.

It is an arithmetic number, because the mean of its divisors is an integer number (182880225).

Almost surely, 2^1447135993 is an apocalyptic number.

It is an amenable number.

1447135993 is a deficient number, since it is larger than the sum of its proper divisors (15905807).

1447135993 is a wasteful number, since it uses less digits than its factorization.

1447135993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24011.

The product of its digits is 408240, while the sum is 46.

The square root of 1447135993 is about 38041.2406869177. The cubic root of 1447135993 is about 1131.1055025474.

The spelling of 1447135993 in words is "one billion, four hundred forty-seven million, one hundred thirty-five thousand, nine hundred ninety-three".