985197790 has 8 divisors (see below), whose sum is σ = 1773356040. Its totient is φ = 394079112.

The previous prime is 985197767. The next prime is 985197797. The reversal of 985197790 is 97791589.

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

It is a super-2 number, since 2×985197790² = 1941229370841768200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985197797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49259880 + ... + 49259899.

It is an arithmetic number, because the mean of its divisors is an integer number (221669505).

Almost surely, 2^985197790 is an apocalyptic number.

985197790 is a deficient number, since it is larger than the sum of its proper divisors (788158250).

985197790 is a wasteful number, since it uses less digits than its factorization.

985197790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98519786.

The product of its (nonzero) digits is 1428840, while the sum is 55.

The square root of 985197790 is about 31387.8605514935. The cubic root of 985197790 is about 995.0413827557.

The spelling of 985197790 in words is "nine hundred eighty-five million, one hundred ninety-seven thousand, seven hundred ninety".