447073993 has 2 divisors, whose sum is σ = 447073994. Its totient is φ = 447073992.

The previous prime is 447073987. The next prime is 447073999. The reversal of 447073993 is 399370744.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (447073987) and next prime (447073999).

It can be written as a sum of positive squares in only one way, i.e., 261242569 + 185831424 = 16163^2 + 13632^2 .

It is a cyclic number.

It is not a de Polignac number, because 447073993 - 2⁵ = 447073961 is a prime.

It is not a weakly prime, because it can be changed into another prime (447073999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223536996 + 223536997.

It is an arithmetic number, because the mean of its divisors is an integer number (223536997).

Almost surely, 2^447073993 is an apocalyptic number.

It is an amenable number.

447073993 is a deficient number, since it is larger than the sum of its proper divisors (1).

447073993 is an equidigital number, since it uses as much as digits as its factorization.

447073993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 46.

The square root of 447073993 is about 21144.1243138608. The cubic root of 447073993 is about 764.6449107448.

The spelling of 447073993 in words is "four hundred forty-seven million, seventy-three thousand, nine hundred ninety-three".