1085555398 has 8 divisors (see below), whose sum is σ = 1628473392. Its totient is φ = 542730936.

The previous prime is 1085555371. The next prime is 1085555399. The reversal of 1085555398 is 8935555801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085555399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30111 + ... + 55477.

It is an arithmetic number, because the mean of its divisors is an integer number (203559174).

Almost surely, 2^1085555398 is an apocalyptic number.

1085555398 is a deficient number, since it is larger than the sum of its proper divisors (542917994).

1085555398 is a wasteful number, since it uses less digits than its factorization.

1085555398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46766.

The product of its (nonzero) digits is 1080000, while the sum is 49.

The square root of 1085555398 is about 32947.7677240811. The cubic root of 1085555398 is about 1027.7417448686.

The spelling of 1085555398 in words is "one billion, eighty-five million, five hundred fifty-five thousand, three hundred ninety-eight".