1089783959 has 18 divisors (see below), whose sum is σ = 1226618568. Its totient is φ = 967474200.

The previous prime is 1089783911. The next prime is 1089783967. The reversal of 1089783959 is 9593879801.

It is not a de Polignac number, because 1089783959 - 2²⁴ = 1073006743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1089783898 and 1089783907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089783059) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 221294 + ... + 226164.

It is an arithmetic number, because the mean of its divisors is an integer number (68145476).

Almost surely, 2^1089783959 is an apocalyptic number.

1089783959 is a deficient number, since it is larger than the sum of its proper divisors (136834609).

1089783959 is an equidigital number, since it uses as much as digits as its factorization.

1089783959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4979 (or 4925 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 59.

The square root of 1089783959 is about 33011.8760296957. The cubic root of 1089783959 is about 1029.0744691224.

The spelling of 1089783959 in words is "one billion, eighty-nine million, seven hundred eighty-three thousand, nine hundred fifty-nine".