447667338493 has 4 divisors (see below), whose sum is σ = 458586054108. Its totient is φ = 436748622880.

The previous prime is 447667338487. The next prime is 447667338499. The reversal of 447667338493 is 394833766744.

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

It is an interprime number because it is at equal distance from previous prime (447667338487) and next prime (447667338499).

It can be written as a sum of positive squares in 2 ways, for example, as 21170832004 + 426496506489 = 145502^2 + 653067^2 .

It is a cyclic number.

It is not a de Polignac number, because 447667338493 - 2¹³ = 447667330301 is a prime.

It is a super-2 number, since 2×447667338493² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447667338499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5459357746 + ... + 5459357827.

It is an arithmetic number, because the mean of its divisors is an integer number (114646513527).

Almost surely, 2^447667338493 is an apocalyptic number.

It is an amenable number.

447667338493 is a deficient number, since it is larger than the sum of its proper divisors (10918715615).

447667338493 is a wasteful number, since it uses less digits than its factorization.

447667338493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10918715614.

The product of its digits is 219469824, while the sum is 64.

The spelling of 447667338493 in words is "four hundred forty-seven billion, six hundred sixty-seven million, three hundred thirty-eight thousand, four hundred ninety-three".