999450223 has 2 divisors, whose sum is σ = 999450224. Its totient is φ = 999450222.

The previous prime is 999450191. The next prime is 999450239. The reversal of 999450223 is 322054999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999450223 - 2⁵ = 999450191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999450223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999450523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499725111 + 499725112.

It is an arithmetic number, because the mean of its divisors is an integer number (499725112).

Almost surely, 2^999450223 is an apocalyptic number.

999450223 is a deficient number, since it is larger than the sum of its proper divisors (1).

999450223 is an equidigital number, since it uses as much as digits as its factorization.

999450223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 999450223 is about 31614.0826689626. The cubic root of 999450223 is about 999.8167074059.

The spelling of 999450223 in words is "nine hundred ninety-nine million, four hundred fifty thousand, two hundred twenty-three".