1089694309 has 8 divisors (see below), whose sum is σ = 1189153152. Its totient is φ = 990301440.

The previous prime is 1089694247. The next prime is 1089694337. The reversal of 1089694309 is 9034969801.

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 1089694309 - 2²¹ = 1087597157 is a prime.

It is a super-3 number, since 3×1089694309³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089694379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21957 + ... + 51589.

It is an arithmetic number, because the mean of its divisors is an integer number (148644144).

Almost surely, 2^1089694309 is an apocalyptic number.

It is an amenable number.

1089694309 is a deficient number, since it is larger than the sum of its proper divisors (99458843).

1089694309 is a wasteful number, since it uses less digits than its factorization.

1089694309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32987.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 1089694309 is about 33010.5181570965. The cubic root of 1089694309 is about 1029.0462497507.

The spelling of 1089694309 in words is "one billion, eighty-nine million, six hundred ninety-four thousand, three hundred nine".