447998437 has 2 divisors, whose sum is σ = 447998438. Its totient is φ = 447998436.

The previous prime is 447998429. The next prime is 447998461. The reversal of 447998437 is 734899744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 328008321 + 119990116 = 18111^2 + 10954^2 .

It is a cyclic number.

It is not a de Polignac number, because 447998437 - 2³ = 447998429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447998497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223999218 + 223999219.

It is an arithmetic number, because the mean of its divisors is an integer number (223999219).

Almost surely, 2^447998437 is an apocalyptic number.

It is an amenable number.

447998437 is a deficient number, since it is larger than the sum of its proper divisors (1).

447998437 is an equidigital number, since it uses as much as digits as its factorization.

447998437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 55.

The square root of 447998437 is about 21165.9735660801. The cubic root of 447998437 is about 765.1715832533.

The spelling of 447998437 in words is "four hundred forty-seven million, nine hundred ninety-eight thousand, four hundred thirty-seven".