984615997 has 2 divisors, whose sum is σ = 984615998. Its totient is φ = 984615996.

The previous prime is 984615971. The next prime is 984616049. The reversal of 984615997 is 799516489.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 668274201 + 316341796 = 25851^2 + 17786^2 .

It is an emirp because it is prime and its reverse (799516489) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 984615997 - 2⁷ = 984615869 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (984610997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492307998 + 492307999.

It is an arithmetic number, because the mean of its divisors is an integer number (492307999).

Almost surely, 2^984615997 is an apocalyptic number.

It is an amenable number.

984615997 is a deficient number, since it is larger than the sum of its proper divisors (1).

984615997 is an equidigital number, since it uses as much as digits as its factorization.

984615997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 58.

The square root of 984615997 is about 31378.5913801114. The cubic root of 984615997 is about 994.8454755279.

The spelling of 984615997 in words is "nine hundred eighty-four million, six hundred fifteen thousand, nine hundred ninety-seven".