985829819 has 4 divisors (see below), whose sum is σ = 1061662896. Its totient is φ = 909996744.

The previous prime is 985829809. The next prime is 985829827. The reversal of 985829819 is 918928589.

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

It is a cyclic number.

It is not a de Polignac number, because 985829819 - 2⁸ = 985829563 is a prime.

It is a super-2 number, since 2×985829819² = 1943720864059145522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985829809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37916519 + ... + 37916544.

It is an arithmetic number, because the mean of its divisors is an integer number (265415724).

Almost surely, 2^985829819 is an apocalyptic number.

985829819 is a deficient number, since it is larger than the sum of its proper divisors (75833077).

985829819 is a wasteful number, since it uses less digits than its factorization.

985829819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75833076.

The product of its digits is 3732480, while the sum is 59.

The square root of 985829819 is about 31397.9269857104. The cubic root of 985829819 is about 995.2541185739.

The spelling of 985829819 in words is "nine hundred eighty-five million, eight hundred twenty-nine thousand, eight hundred nineteen".