982278649 has 16 divisors (see below), whose sum is σ = 1135684800. Its totient is φ = 839656960.

The previous prime is 982278637. The next prime is 982278719. The reversal of 982278649 is 946872289.

It is a cyclic number.

It is not a de Polignac number, because 982278649 - 2¹⁷ = 982147577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 982278649.

It is not an unprimeable number, because it can be changed into a prime (982278149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283077 + ... + 286525.

It is an arithmetic number, because the mean of its divisors is an integer number (70980300).

Almost surely, 2^982278649 is an apocalyptic number.

982278649 is the 16753-rd nonagonal number.

It is an amenable number.

982278649 is a deficient number, since it is larger than the sum of its proper divisors (153406151).

982278649 is a wasteful number, since it uses less digits than its factorization.

982278649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000.

The product of its digits is 3483648, while the sum is 55.

The square root of 982278649 is about 31341.3249400851. The cubic root of 982278649 is about 994.0576413181.

The spelling of 982278649 in words is "nine hundred eighty-two million, two hundred seventy-eight thousand, six hundred forty-nine".