984946139 has 2 divisors, whose sum is σ = 984946140. Its totient is φ = 984946138.

The previous prime is 984946133. The next prime is 984946211. The reversal of 984946139 is 931649489.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-984946139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (984946133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492473069 + 492473070.

It is an arithmetic number, because the mean of its divisors is an integer number (492473070).

Almost surely, 2^984946139 is an apocalyptic number.

984946139 is a deficient number, since it is larger than the sum of its proper divisors (1).

984946139 is an equidigital number, since it uses as much as digits as its factorization.

984946139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 53.

The square root of 984946139 is about 31383.8515641404. The cubic root of 984946139 is about 994.9566537517.

The spelling of 984946139 in words is "nine hundred eighty-four million, nine hundred forty-six thousand, one hundred thirty-nine".