999226849 has 2 divisors, whose sum is σ = 999226850. Its totient is φ = 999226848.

The previous prime is 999226831. The next prime is 999226889. The reversal of 999226849 is 948622999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 911617249 + 87609600 = 30193^2 + 9360^2 .

It is a cyclic number.

It is not a de Polignac number, because 999226849 - 2⁵ = 999226817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 999226793 and 999226802.

It is not a weakly prime, because it can be changed into another prime (999226829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499613424 + 499613425.

It is an arithmetic number, because the mean of its divisors is an integer number (499613425).

Almost surely, 2^999226849 is an apocalyptic number.

It is an amenable number.

999226849 is a deficient number, since it is larger than the sum of its proper divisors (1).

999226849 is an equidigital number, since it uses as much as digits as its factorization.

999226849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5038848, while the sum is 58.

The square root of 999226849 is about 31610.5496472301. The cubic root of 999226849 is about 999.7422165534.

The spelling of 999226849 in words is "nine hundred ninety-nine million, two hundred twenty-six thousand, eight hundred forty-nine".