447384139 has 2 divisors, whose sum is σ = 447384140. Its totient is φ = 447384138.

The previous prime is 447384101. The next prime is 447384143. The reversal of 447384139 is 931483744.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 447384139 - 2⁹ = 447383627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 447384095 and 447384104.

It is not a weakly prime, because it can be changed into another prime (447384739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223692069 + 223692070.

It is an arithmetic number, because the mean of its divisors is an integer number (223692070).

Almost surely, 2^447384139 is an apocalyptic number.

447384139 is a deficient number, since it is larger than the sum of its proper divisors (1).

447384139 is an equidigital number, since it uses as much as digits as its factorization.

447384139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The square root of 447384139 is about 21151.4571365663. The cubic root of 447384139 is about 764.8216874053.

The spelling of 447384139 in words is "four hundred forty-seven million, three hundred eighty-four thousand, one hundred thirty-nine".