1089096391 has 4 divisors (see below), whose sum is σ = 1136448432. Its totient is φ = 1041744352.

The previous prime is 1089096377. The next prime is 1089096401. The reversal of 1089096391 is 1936909801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1089096391 - 2¹⁹ = 1088572103 is a prime.

It is a super-2 number, since 2×1089096391² = 2372261897778449762, 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 (1089096301) 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, 23675986 + ... + 23676031.

It is an arithmetic number, because the mean of its divisors is an integer number (284112108).

Almost surely, 2^1089096391 is an apocalyptic number.

1089096391 is a deficient number, since it is larger than the sum of its proper divisors (47352041).

1089096391 is an equidigital number, since it uses as much as digits as its factorization.

1089096391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47352040.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 1089096391 is about 33001.4604373806. The cubic root of 1089096391 is about 1028.8580018965.

The spelling of 1089096391 in words is "one billion, eighty-nine million, ninety-six thousand, three hundred ninety-one".