1089769069 has 4 divisors (see below), whose sum is σ = 1089879196. Its totient is φ = 1089658944.

The previous prime is 1089769063. The next prime is 1089769097. The reversal of 1089769069 is 9609679801.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 290293444 + 799475625 = 17038^2 + 28275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1089769069 - 2⁷ = 1089768941 is a prime.

It is a super-2 number, since 2×1089769069² = 2375193247498253522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089769063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38574 + ... + 60559.

It is an arithmetic number, because the mean of its divisors is an integer number (272469799).

Almost surely, 2^1089769069 is an apocalyptic number.

It is an amenable number.

1089769069 is a deficient number, since it is larger than the sum of its proper divisors (110127).

1089769069 is an equidigital number, since it uses as much as digits as its factorization.

1089769069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110126.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 1089769069 is about 33011.6505040266. The cubic root of 1089769069 is about 1029.0697822642.

The spelling of 1089769069 in words is "one billion, eighty-nine million, seven hundred sixty-nine thousand, sixty-nine".