1089335437 has 4 divisors (see below), whose sum is σ = 1115904636. Its totient is φ = 1062766240.

The previous prime is 1089335431. The next prime is 1089335441. The reversal of 1089335437 is 7345339801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7345339801 = 53 ⋅138591317.

It can be written as a sum of positive squares in 2 ways, for example, as 158231241 + 931104196 = 12579^2 + 30514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1089335437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1089335393 and 1089335402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089335431) 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, 13284538 + ... + 13284619.

It is an arithmetic number, because the mean of its divisors is an integer number (278976159).

Almost surely, 2^1089335437 is an apocalyptic number.

It is an amenable number.

1089335437 is a deficient number, since it is larger than the sum of its proper divisors (26569199).

1089335437 is an equidigital number, since it uses as much as digits as its factorization.

1089335437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26569198.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 1089335437 is about 33005.0819874758. The cubic root of 1089335437 is about 1028.9332711442.

The spelling of 1089335437 in words is "one billion, eighty-nine million, three hundred thirty-five thousand, four hundred thirty-seven".