1089967442 has 4 divisors (see below), whose sum is σ = 1634951166. Its totient is φ = 544983720.

The previous prime is 1089967429. The next prime is 1089967481. The reversal of 1089967442 is 2447699801.

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

It can be written as a sum of positive squares in only one way, i.e., 637512001 + 452455441 = 25249^2 + 21271^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272491859 + ... + 272491862.

Almost surely, 2^1089967442 is an apocalyptic number.

1089967442 is a deficient number, since it is larger than the sum of its proper divisors (544983724).

1089967442 is an equidigital number, since it uses as much as digits as its factorization.

1089967442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544983723.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 1089967442 is about 33014.6549580637. The cubic root of 1089967442 is about 1029.1322197354.

The spelling of 1089967442 in words is "one billion, eighty-nine million, nine hundred sixty-seven thousand, four hundred forty-two".