447128028623 has 4 divisors (see below), whose sum is σ = 447132403848. Its totient is φ = 447123653400.

The previous prime is 447128028547. The next prime is 447128028637. The reversal of 447128028623 is 326820821744.

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

It is a cyclic number.

It is not a de Polignac number, because 447128028623 - 2¹² = 447128024527 is a prime.

It is a super-2 number, since 2×447128028623² (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 (447128027623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2030561 + ... + 2239962.

It is an arithmetic number, because the mean of its divisors is an integer number (111783100962).

Almost surely, 2^447128028623 is an apocalyptic number.

447128028623 is a deficient number, since it is larger than the sum of its proper divisors (4375225).

447128028623 is a wasteful number, since it uses less digits than its factorization.

447128028623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4375224.

The product of its (nonzero) digits is 1032192, while the sum is 47.

The spelling of 447128028623 in words is "four hundred forty-seven billion, one hundred twenty-eight million, twenty-eight thousand, six hundred twenty-three".