1099319087 has 2 divisors, whose sum is σ = 1099319088. Its totient is φ = 1099319086.

The previous prime is 1099319077. The next prime is 1099319113. The reversal of 1099319087 is 7809139901.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1099319087 - 2⁴ = 1099319071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1099319077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549659543 + 549659544.

It is an arithmetic number, because the mean of its divisors is an integer number (549659544).

Almost surely, 2^1099319087 is an apocalyptic number.

1099319087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099319087 is an equidigital number, since it uses as much as digits as its factorization.

1099319087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 47.

The square root of 1099319087 is about 33155.9811647914. The cubic root of 1099319087 is about 1032.0670736281.

The spelling of 1099319087 in words is "one billion, ninety-nine million, three hundred nineteen thousand, eighty-seven".