1090099 has 2 divisors, whose sum is σ = 1090100. Its totient is φ = 1090098.

The previous prime is 1090097. The next prime is 1090127. The reversal of 1090099 is 9900901.

It is an a-pointer prime, because the next prime (1090127) can be obtained adding 1090099 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1090099 - 2¹ = 1090097 is a prime.

Together with 1090097, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1090097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545049 + 545050.

It is an arithmetic number, because the mean of its divisors is an integer number (545050).

2^1090099 is an apocalyptic number.

1090099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090099 is an equidigital number, since it uses as much as digits as its factorization.

1090099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 1090099 is about 1044.0780622157. The cubic root of 1090099 is about 102.9173623152.

It can be divided in two parts, 10 and 90099, that added together give a palindrome (90109).

The spelling of 1090099 in words is "one million, ninety thousand, ninety-nine".