445223803 has 2 divisors, whose sum is σ = 445223804. Its totient is φ = 445223802.

The previous prime is 445223749. The next prime is 445223813. The reversal of 445223803 is 308322544.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445223803 is a prime.

It is not a weakly prime, because it can be changed into another prime (445223813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222611901 + 222611902.

It is an arithmetic number, because the mean of its divisors is an integer number (222611902).

Almost surely, 2^445223803 is an apocalyptic number.

445223803 is a deficient number, since it is larger than the sum of its proper divisors (1).

445223803 is an equidigital number, since it uses as much as digits as its factorization.

445223803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 445223803 is about 21100.3270827729. The cubic root of 445223803 is about 763.5886393047.

The spelling of 445223803 in words is "four hundred forty-five million, two hundred twenty-three thousand, eight hundred three".