1089965697 has 8 divisors (see below), whose sum is σ = 1459690656. Its totient is φ = 723442272.

The previous prime is 1089965687. The next prime is 1089965707. The reversal of 1089965697 is 7965699801.

It is an interprime number because it is at equal distance from previous prime (1089965687) and next prime (1089965707).

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

It is not a de Polignac number, because 1089965697 - 2¹² = 1089961601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1089965697.

It is not an unprimeable number, because it can be changed into a prime (1089965627) 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, 799588 + ... + 800949.

It is an arithmetic number, because the mean of its divisors is an integer number (182461332).

Almost surely, 2^1089965697 is an apocalyptic number.

It is an amenable number.

1089965697 is a deficient number, since it is larger than the sum of its proper divisors (369724959).

1089965697 is a wasteful number, since it uses less digits than its factorization.

1089965697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600767.

The product of its (nonzero) digits is 7348320, while the sum is 60.

The square root of 1089965697 is about 33014.6285303954. The cubic root of 1089965697 is about 1029.1316705335.

The spelling of 1089965697 in words is "one billion, eighty-nine million, nine hundred sixty-five thousand, six hundred ninety-seven".