999226799 has 4 divisors (see below), whose sum is σ = 1058004864. Its totient is φ = 940448736.

The previous prime is 999226759. The next prime is 999226801. The reversal of 999226799 is 997622999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 997622999 = 23 ⋅43374913.

It is a cyclic number.

It is not a de Polignac number, because 999226799 - 2²⁸ = 730791343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999226759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29389007 + ... + 29389040.

It is an arithmetic number, because the mean of its divisors is an integer number (264501216).

Almost surely, 2^999226799 is an apocalyptic number.

999226799 is a deficient number, since it is larger than the sum of its proper divisors (58778065).

999226799 is a wasteful number, since it uses less digits than its factorization.

999226799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58778064.

The product of its digits is 9920232, while the sum is 62.

The square root of 999226799 is about 31610.5488563549. The cubic root of 999226799 is about 999.7421998781.

The spelling of 999226799 in words is "nine hundred ninety-nine million, two hundred twenty-six thousand, seven hundred ninety-nine".