983506989 has 8 divisors (see below), whose sum is σ = 1311491872. Its totient is φ = 655596720.

The previous prime is 983506987. The next prime is 983506991. The reversal of 983506989 is 989605389.

983506989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (983506987) and next prime (983506991).

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

It is not a de Polignac number, because 983506989 - 2¹ = 983506987 is a prime.

It is a super-2 number, since 2×983506989² = 1934571994823692242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (983506987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30954 + ... + 54084.

It is an arithmetic number, because the mean of its divisors is an integer number (163936484).

Almost surely, 2^983506989 is an apocalyptic number.

It is an amenable number.

983506989 is a deficient number, since it is larger than the sum of its proper divisors (327984883).

983506989 is a wasteful number, since it uses less digits than its factorization.

983506989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37307.

The product of its (nonzero) digits is 4199040, while the sum is 57.

The square root of 983506989 is about 31360.9149898405. The cubic root of 983506989 is about 994.4718252658.

The spelling of 983506989 in words is "nine hundred eighty-three million, five hundred six thousand, nine hundred eighty-nine".