1089417842 has 6 divisors (see below), whose sum is σ = 1634196783. Its totient is φ = 544685582.

The previous prime is 1089417803. The next prime is 1089417859. The reversal of 1089417842 is 2487149801.

It can be written as a sum of positive squares in only one way, i.e., 544708921 + 544708921 = 23339^2 + 23339^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=23339.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1089417793 and 1089417802.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 35009 + ... + 58347.

Almost surely, 2^1089417842 is an apocalyptic number.

1089417842 is a deficient number, since it is larger than the sum of its proper divisors (544778941).

1089417842 is an frugal number, since it uses more digits than its factorization.

1089417842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46680 (or 23341 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 1089417842 is about 33006.3303322257. The cubic root of 1089417842 is about 1028.9592157416.

The spelling of 1089417842 in words is "one billion, eighty-nine million, four hundred seventeen thousand, eight hundred forty-two".