1099456745 has 4 divisors (see below), whose sum is σ = 1319348100. Its totient is φ = 879565392.

The previous prime is 1099456663. The next prime is 1099456747. The reversal of 1099456745 is 5476549901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 173106649 + 926350096 = 13157^2 + 30436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099456745 - 2¹⁴ = 1099440361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1099456693 and 1099456702.

It is not an unprimeable number, because it can be changed into a prime (1099456747) 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, 109945670 + ... + 109945679.

It is an arithmetic number, because the mean of its divisors is an integer number (329837025).

Almost surely, 2^1099456745 is an apocalyptic number.

It is an amenable number.

1099456745 is a deficient number, since it is larger than the sum of its proper divisors (219891355).

1099456745 is an equidigital number, since it uses as much as digits as its factorization.

1099456745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219891354.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The square root of 1099456745 is about 33158.0570148493. The cubic root of 1099456745 is about 1032.1101507053.

The spelling of 1099456745 in words is "one billion, ninety-nine million, four hundred fifty-six thousand, seven hundred forty-five".