447988903 has 2 divisors, whose sum is σ = 447988904. Its totient is φ = 447988902.

The previous prime is 447988889. The next prime is 447988907. The reversal of 447988903 is 309889744.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-447988903 is a prime.

It is a super-2 number, since 2×447988903² = 401388114422286818, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (447988907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 223994451 + 223994452.

It is an arithmetic number, because the mean of its divisors is an integer number (223994452).

Almost surely, 2^447988903 is an apocalyptic number.

447988903 is a deficient number, since it is larger than the sum of its proper divisors (1).

447988903 is an equidigital number, since it uses as much as digits as its factorization.

447988903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The square root of 447988903 is about 21165.7483449086. The cubic root of 447988903 is about 765.1661552600.

The spelling of 447988903 in words is "four hundred forty-seven million, nine hundred eighty-eight thousand, nine hundred three".