1099619 has 2 divisors, whose sum is σ = 1099620. Its totient is φ = 1099618.

The previous prime is 1099589. The next prime is 1099621. The reversal of 1099619 is 9169901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1099619 - 2⁸ = 1099363 is a prime.

It is a super-2 number, since 2×1099619² = 2418323890322, which contains 22 as substring.

Together with 1099621, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1099649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549809 + 549810.

It is an arithmetic number, because the mean of its divisors is an integer number (549810).

2^1099619 is an apocalyptic number.

1099619 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099619 is an equidigital number, since it uses as much as digits as its factorization.

1099619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 1099619 is about 1048.6271978163. The cubic root of 1099619 is about 103.2160920262.

The spelling of 1099619 in words is "one million, ninety-nine thousand, six hundred nineteen".