1089684299 has 18 divisors (see below), whose sum is σ = 1226301804. Its totient is φ = 960265440.

The previous prime is 1089684263. The next prime is 1089684301. The reversal of 1089684299 is 9924869801.

It is a de Polignac number, because none of the positive numbers 2^k-1089684299 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1089684229) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4050737 + ... + 4051005.

It is an arithmetic number, because the mean of its divisors is an integer number (68127878).

Almost surely, 2^1089684299 is an apocalyptic number.

1089684299 is a deficient number, since it is larger than the sum of its proper divisors (136617505).

1089684299 is an frugal number, since it uses more digits than its factorization.

1089684299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 56.

The square root of 1089684299 is about 33010.3665384073. The cubic root of 1089684299 is about 1029.0430987800.

The spelling of 1089684299 in words is "one billion, eighty-nine million, six hundred eighty-four thousand, two hundred ninety-nine".