1089233964 has 72 divisors (see below), whose sum is σ = 3388738080. Its totient is φ = 287269632.

The previous prime is 1089233879. The next prime is 1089233969. The reversal of 1089233964 is 4693329801.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1089233969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162969 + ... + 169520.

Almost surely, 2^1089233964 is an apocalyptic number.

1089233964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1089233964 is an abundant number, since it is smaller than the sum of its proper divisors (2299504116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1089233964 is a wasteful number, since it uses less digits than its factorization.

1089233964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332519 (or 332514 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 1089233964 is about 33003.5447187117. The cubic root of 1089233964 is about 1028.9013213320.

The spelling of 1089233964 in words is "one billion, eighty-nine million, two hundred thirty-three thousand, nine hundred sixty-four".