1099399919 has 2 divisors, whose sum is σ = 1099399920. Its totient is φ = 1099399918.

The previous prime is 1099399901. The next prime is 1099399943. The reversal of 1099399919 is 9199939901.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1099399919 - 2⁸ = 1099399663 is a prime.

It is a super-2 number, since 2×1099399919² = 2417360363794413122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1099399219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549699959 + 549699960.

It is an arithmetic number, because the mean of its divisors is an integer number (549699960).

Almost surely, 2^1099399919 is an apocalyptic number.

1099399919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099399919 is an equidigital number, since it uses as much as digits as its factorization.

1099399919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1594323, while the sum is 59.

The square root of 1099399919 is about 33157.2001079705. The cubic root of 1099399919 is about 1032.0923686803.

The spelling of 1099399919 in words is "one billion, ninety-nine million, three hundred ninety-nine thousand, nine hundred nineteen".