1999246559 has 2 divisors, whose sum is σ = 1999246560. Its totient is φ = 1999246558.

The previous prime is 1999246537. The next prime is 1999246607. The reversal of 1999246559 is 9556429991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1999246559 - 2²⁴ = 1982469343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1999246498 and 1999246507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1999246159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999623279 + 999623280.

It is an arithmetic number, because the mean of its divisors is an integer number (999623280).

Almost surely, 2^1999246559 is an apocalyptic number.

1999246559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1999246559 is an equidigital number, since it uses as much as digits as its factorization.

1999246559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7873200, while the sum is 59.

The square root of 1999246559 is about 44712.9350300335. The cubic root of 1999246559 is about 1259.7628173274.

The spelling of 1999246559 in words is "one billion, nine hundred ninety-nine million, two hundred forty-six thousand, five hundred fifty-nine".