984970643 has 2 divisors, whose sum is σ = 984970644. Its totient is φ = 984970642.

The previous prime is 984970639. The next prime is 984970733. The reversal of 984970643 is 346079489.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 984970643 - 2² = 984970639 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 984970591 and 984970600.

It is not a weakly prime, because it can be changed into another prime (984970243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492485321 + 492485322.

It is an arithmetic number, because the mean of its divisors is an integer number (492485322).

Almost surely, 2^984970643 is an apocalyptic number.

984970643 is a deficient number, since it is larger than the sum of its proper divisors (1).

984970643 is an equidigital number, since it uses as much as digits as its factorization.

984970643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 984970643 is about 31384.2419535664. The cubic root of 984970643 is about 994.9649046989.

The spelling of 984970643 in words is "nine hundred eighty-four million, nine hundred seventy thousand, six hundred forty-three".