1109699857 has 8 divisors (see below), whose sum is σ = 1268740800. Its totient is φ = 950787024.

The previous prime is 1109699813. The next prime is 1109699887. The reversal of 1109699857 is 7589969011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1109699857 - 2²³ = 1101311249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1109699798 and 1109699807.

It is not an unprimeable number, because it can be changed into a prime (1109699887) 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 7 ways as a sum of consecutive naturals, for example, 12682 + ... + 48787.

It is an arithmetic number, because the mean of its divisors is an integer number (158592600).

Almost surely, 2^1109699857 is an apocalyptic number.

It is an amenable number.

1109699857 is a deficient number, since it is larger than the sum of its proper divisors (159040943).

1109699857 is an equidigital number, since it uses as much as digits as its factorization.

1109699857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64055.

The product of its (nonzero) digits is 1224720, while the sum is 55.

The square root of 1109699857 is about 33312.1577956157. The cubic root of 1109699857 is about 1035.3054734009.

The spelling of 1109699857 in words is "one billion, one hundred nine million, six hundred ninety-nine thousand, eight hundred fifty-seven".