1226039999 has 8 divisors (see below), whose sum is σ = 1308746880. Its totient is φ = 1145151000.

The previous prime is 1226039981. The next prime is 1226040071. The reversal of 1226039999 is 9999306221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1226039999 - 2²⁴ = 1209262783 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 (1226039959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453077 + ... + 455774.

It is an arithmetic number, because the mean of its divisors is an integer number (163593360).

Almost surely, 2^1226039999 is an apocalyptic number.

1226039999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1226039999 is a deficient number, since it is larger than the sum of its proper divisors (82706881).

1226039999 is an equidigital number, since it uses as much as digits as its factorization.

1226039999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908941.

The product of its (nonzero) digits is 472392, while the sum is 50.

The square root of 1226039999 is about 35014.8539765626. The cubic root of 1226039999 is about 1070.2901938026.

The spelling of 1226039999 in words is "one billion, two hundred twenty-six million, thirty-nine thousand, nine hundred ninety-nine".