982688639 has 8 divisors (see below), whose sum is σ = 1031083872. Its totient is φ = 934765920.

The previous prime is 982688617. The next prime is 982688647. The reversal of 982688639 is 936886289.

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

It is a cyclic number.

It is not a de Polignac number, because 982688639 - 2²⁰ = 981640063 is a prime.

It is a super-2 number, since 2×982688639² = 1931353922439344642, 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 (982688669) 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, 113864 + ... + 122189.

It is an arithmetic number, because the mean of its divisors is an integer number (128885484).

Almost surely, 2^982688639 is an apocalyptic number.

982688639 is a deficient number, since it is larger than the sum of its proper divisors (48395233).

982688639 is a wasteful number, since it uses less digits than its factorization.

982688639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236257.

The product of its digits is 8957952, while the sum is 59.

The square root of 982688639 is about 31347.8649831213. The cubic root of 982688639 is about 994.1959242121.

The spelling of 982688639 in words is "nine hundred eighty-two million, six hundred eighty-eight thousand, six hundred thirty-nine".