1099247 has 2 divisors, whose sum is σ = 1099248. Its totient is φ = 1099246.

The previous prime is 1099223. The next prime is 1099249. The reversal of 1099247 is 7429901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1099247 - 2²⁰ = 50671 is a prime.

Together with 1099249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1099249) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549623 + 549624.

It is an arithmetic number, because the mean of its divisors is an integer number (549624).

2^1099247 is an apocalyptic number.

1099247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099247 is an equidigital number, since it uses as much as digits as its factorization.

1099247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 1099247 is about 1048.4498080500. The cubic root of 1099247 is about 103.2044514135.

The spelling of 1099247 in words is "one million, ninety-nine thousand, two hundred forty-seven".