982540991 has 2 divisors, whose sum is σ = 982540992. Its totient is φ = 982540990.

The previous prime is 982540987. The next prime is 982541041. The reversal of 982540991 is 199045289.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 982540991 - 2² = 982540987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (982540921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491270495 + 491270496.

It is an arithmetic number, because the mean of its divisors is an integer number (491270496).

Almost surely, 2^982540991 is an apocalyptic number.

982540991 is a deficient number, since it is larger than the sum of its proper divisors (1).

982540991 is an equidigital number, since it uses as much as digits as its factorization.

982540991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 47.

The square root of 982540991 is about 31345.5099017387. The cubic root of 982540991 is about 994.1461293987.

The spelling of 982540991 in words is "nine hundred eighty-two million, five hundred forty thousand, nine hundred ninety-one".