999623227 has 2 divisors, whose sum is σ = 999623228. Its totient is φ = 999623226.

The previous prime is 999623221. The next prime is 999623267. The reversal of 999623227 is 722326999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999623227 - 2¹⁹ = 999098939 is a prime.

It is not a weakly prime, because it can be changed into another prime (999623221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499811613 + 499811614.

It is an arithmetic number, because the mean of its divisors is an integer number (499811614).

Almost surely, 2^999623227 is an apocalyptic number.

999623227 is a deficient number, since it is larger than the sum of its proper divisors (1).

999623227 is an equidigital number, since it uses as much as digits as its factorization.

999623227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 49.

The square root of 999623227 is about 31616.8187362359. The cubic root of 999623227 is about 999.8743932236.

The spelling of 999623227 in words is "nine hundred ninety-nine million, six hundred twenty-three thousand, two hundred twenty-seven".