1099196947 has 4 divisors (see below), whose sum is σ = 1137100320. Its totient is φ = 1061293576.

The previous prime is 1099196939. The next prime is 1099196951. The reversal of 1099196947 is 7496919901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7496919901 = 59 ⋅127066439.

It is a cyclic number.

It is not a de Polignac number, because 1099196947 - 2³ = 1099196939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1099196957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18951643 + ... + 18951700.

It is an arithmetic number, because the mean of its divisors is an integer number (284275080).

Almost surely, 2^1099196947 is an apocalyptic number.

1099196947 is a deficient number, since it is larger than the sum of its proper divisors (37903373).

1099196947 is an equidigital number, since it uses as much as digits as its factorization.

1099196947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37903372.

The product of its (nonzero) digits is 1102248, while the sum is 55.

The square root of 1099196947 is about 33154.1392136789. The cubic root of 1099196947 is about 1032.0288495606.

The spelling of 1099196947 in words is "one billion, ninety-nine million, one hundred ninety-six thousand, nine hundred forty-seven".